in which stage of meiosis does crossover take place?

There are a number of strategies for managing and maintaining sustainable carrying capacity in a natural resource management.

Conservation: Conservation is the practice of protecting and preserving natural resources. This can be done through a variety of means, such as establishing protected areas, managing wildlife populations, and reducing pollution.

Sustainable use: Sustainable use is the use of natural resources in a way that meets the needs of the present without compromising the ability of future generations to meet their own needs. This can be done through a variety of means, such as using renewable resources, recycling and reusing materials, and minimizing waste.

Adaptation: Adaptation is the process of adjusting to changes in the environment. This can be done through a variety of means, such as developing new technologies, changing agricultural practices, and building infrastructure that is more resilient to climate change.

Find out more on natural resource management here: https://brainly.com/question/12458107

#SPJ1

If a blood test indicated that a person had a high level of IgM antibodies in the blood, it could be concluded that the person has recently been exposed to an infection or antigen.

It indicates that the person's immune system has recognized the presence of an antigen, such as a viral or bacterial infection, and has mounted an immune response by producing IgM antibodies to target and eliminate the infectious agent.

To learn more about antigen, visit here

https://brainly.com/question/24384193

#SPJ11

Coal combustion has been cleaned up with the removal of sulfur from the coal. Coal-fired plants still emit the most carbon dioxide (CO2) of all the generation methods: The statements above are completed correctly by the i.In the past, coal combustion was harmful to the environment, emitting harmful substances and pollutants.

However, in recent years, this has been improved. Sulfur is the primary source of pollution in coal combustion. Coal-fired plants are still responsible for the majority of carbon dioxide emissions.

Carbon dioxide is a greenhouse gas that contributes to climate change.

Many efforts have been made to reduce emissions from coal-fired plants, including carbon capture and storage (CCS) technology. This technology captures carbon dioxide from coal combustion before it enters the atmosphere and stores it underground.

Overall, coal combustion has improved over the years, but it still remains a significant source of pollution.

As a result, many countries are turning to renewable energy sources to reduce their carbon footprint and combat climate change.

The transition to clean energy will not happen overnight, but it is important to continue to work towards a more sustainable future. In conclusion, the removal of sulfur from coal has contributed to cleaner coal combustion, but coal-fired plants still emit the most carbon dioxide of all the generation methods.

To know more about Coal visit;

brainly.com/question/30560160

#SPJ11

Natural selection is based entirely on reproductive success because it is the only way to ensure that an organism's beneficial traits are passed on to future generations. Reproductive success is the key to natural selection as it is the only means by which an organism's genes are passed on to future generations.

What is natural selection?

Natural selection is the process by which organisms that are better adapted to their environment have a higher chance of surviving and reproducing, thereby passing on their advantageous traits to their offspring. The fundamental concept of natural selection is that individuals that are better suited to their environment are more likely to survive and produce more offspring than those that are less suited.

Natural selection occurs in three distinct ways: directional, stabilizing, and disruptive. Directional selection occurs when a particular phenotype becomes more common in a population over time. Stabilizing selection occurs when a population adapts to an intermediate phenotype, while disruptive selection occurs when the population adapts to two or more distinct phenotypes.

In conclusion, natural selection is based entirely on reproductive success because the only way for beneficial traits to be passed on to future generations is through successful reproduction. Thus, organisms that are more reproductively successful have a higher chance of passing on their advantageous traits to their offspring.

To know more about Natural selection visit:

https://brainly.com/question/20152465

#SPJ11

North side of each of the groins shows accretion of sand. Therefore option B is correct.

In general, groins are designed to trap sediment and interrupt the longshore drift, causing sand to accumulate on their updrift side and leading to erosion on their downdrift side.

The updrift side refers to the side of the groin facing the direction from which the sediment is coming, while the downdrift side refers to the side facing away from the sediment source.

Based on this understanding, if we assume a typical shoreline configuration and the common direction of longshore drift, the accretion of sand would occur on the updrift side of each groin. In this case, the answer "B. north" would be the most likely choice.

Know more about Sediments:

https://brainly.com/question/11951776

#SPJ4

Marfan syndrome is a genetic disorder that affects the body's connective tissue, which provides support and structure to various organs and tissues. The correct option is" Marfan syndrome is a disorder caused by a defect in the production of an elastic connective tissue protein called fibrillin".

Marfan syndrome is caused by mutations in the gene responsible for producing the protein called fibrillin-1. Fibrillin is a critical component of connective tissue and is involved in maintaining the strength and flexibility of various body structures, including the heart, blood vessels, bones, joints, and eyes.

Individuals with Marfan syndrome often have tall stature, long limbs, and flexible joints. They may also have various cardiovascular abnormalities, such as aortic aneurysms or valve problems. Other common features include a long, narrow face, a high-arched palate, a curved spine (scoliosis), and lens dislocation in the eye.

The correct option is "Marfan syndrome is a disorder caused by a defect in the production of an elastic connective tissue protein called fibrillin".

For more details regarding Marfan syndrome, visit:

https://brainly.com/question/1335306

#SPJ4

Answer:

mRNA

Explanation:

The velocity of the iguana when it hits the water is 28 m/s.

Green iguanas are known to bask on tall tree branches over the water to escape predators such as eagles. In case of danger, the iguanas simply drop off the tree and fall into the water.

To calculate the velocity of the iguana when it hits the water, the law of conservation of energy and the kinematic equation can be applied. The law of conservation of energy states that the total energy of a system remains constant. Therefore, at any point in time, the energy possessed by the iguana can be calculated using the formula:

mgh = 1/2mv² + mgh

Here, m = 3 kg, g = 9.8 m/s², h = 20 m.

The potential energy of the iguana, mgh = 3 × 9.8 × 20 = 588 JAt the moment the iguana lets go of the branch, all the potential energy is converted to kinetic energy, so:

mgh = 1/2mv² + mgh, therefore,1/2mv² = mgh – mgh = 588 J

Thus, 1/2(3 kg)v² = 588 J, which simplifies to:v² = 2(588 J) / 3 kg.

Therefore, v = √(2 × 588 / 3) = √784 = 28 m/s

To know more about velocity visit:

https://brainly.com/question/30559316

#SPJ11

The correct answer is option (A) The pressure in the outlet section pout is equal to 5.28 bar.

The convergent-divergent nozzle or De Laval nozzle is a nozzle that converts the internal energy of a gas into kinetic energy by an adiabatic expansion process.

It consists of a converging section and a diverging section. The nozzle is designed to expand gases to supersonic velocities. The design of the De Laval nozzle is critical because its performance is highly dependent on its design.

The De Laval nozzle is designed based on the pressure ratio of the inlet to the outlet, which is called the critical pressure ratio.

The critical pressure ratio is the pressure ratio at which the flow reaches sonic velocity. According to the given data, the pressure ratio of the design is 0.2.

Therefore, the pressure in the outlet can be calculated as:

pout = P1/(2/(γ + 1))^(γ/(γ - 1)) * (1 - p2/P1^(γ - 1)/((γ + 1)/2)^(γ/(γ - 1)))

Where, γ is the ratio of specific heats of the gas. In this case, γ = 1.4 (since the gas is air).

Therefore,

pout = 10/(2/2.4)^1.4 * (1 - 1/10^(1.4 - 1)/((1.4 + 1)/2)^(1.4/(1.4 - 1)))

pout = 5.28 bar

Hence, the correct answer is option (A) The pressure in the outlet section pout is equal to 5.28 bar.

to know more about convergence and divergence visit:

https://brainly.com/question/31778047

#SPJ11

The production and use of cytoplasmic hybrids or chimeras in stem cell research are accompanied by ethical concerns. Chimeras or cybrids are animals with human DNA or cells; therefore, it raises ethical concerns about animal welfare, human rights, and the scientific use of human-animal hybrids.

Below are some ethical issues raised and avoided by the regulated creation and use of inter-species cytoplasmic hybrids in stem cell research.

Ethical issues avoided in the regulated creation and use of inter-species cytoplasmic hybrids in stem cell research

Animal welfare - The use of chimeras in stem cell research raises concerns about the welfare of animals. In the creation of chimeras, the contribution of human cells or DNA to an animal can result in the animal experiencing harm.

If the animal has an implanted embryo, it may be subjected to pain, stress, or suffering that is contrary to animal welfare and ethical regulations of animal use for scientific purposes.

Ethical issues raised by the regulated creation and use of inter-species cytoplasmic hybrids in stem cell research

Human-animal hybrid - Human-animal hybrids raise ethical concerns about the nature of life, scientific integrity, and moral responsibilities.

The creation of chimeras or cybrids involves the mixing of different species with the human species, which raises questions about the moral or ethical status of such creations.

Moreover, it raises concerns about the dignity and rights of these hybrids, which might be viewed as a threat to human values.

Research ethics - The production and use of chimeras or cybrids can also raise questions about research ethics. When such hybrids are created for research purposes, it raises concerns about the moral value of scientific inquiry and the risks associated with it.

In addition, it raises questions about how such research is conducted, such as informed consent, confidentiality, and scientific integrity.

One possible objection to the view above is that research conducted using human-animal chimeras will benefit human beings by providing insight into various diseases and conditions.

However, it is important to consider the ethical implications of such research to ensure that the value obtained from it is not outweighed by the potential risks or harm caused.

Therefore, it is crucial to regulate the production and use of chimeras to balance the benefits of such research with the ethical considerations involved.

To know more about cytoplasmic visit:

https://brainly.com/question/29343209

#SPJ11

The magnitude of the electric field in the membrane is 8.75 x 10⁶ V/m.

The magnitude of the electric field in the membrane is 8.75 x 10⁶ V/m.

The given values are:

Thickness of the cell membrane = d = 8.0 x 10⁻⁹ m

Potential difference across the membrane = V = 0.070 V

The electric field E is given by the formula: E = V/d

The magnitude of the electric field in the membrane is 8.75 x 10⁶ V/m.

A cell membrane is made up of two layers of lipid molecules, which are arranged in a specific way that separates the inside and outside of the cell. The inner and outer surfaces of a cell membrane carry a negative and a positive charge, respectively. Because of these charges, a potential difference of about 0.070 V exists across the membrane.

The thickness of the cell membrane is 8.0×10⁻⁹ m. To determine the magnitude of the electric field in the membrane, we use the formula:

E = V/d

where E is the electric field, V is the potential difference, and d is the thickness of the membrane.

Substituting the given values, we get:

E = 0.070 V / 8.0×10⁻¹⁹ m E = 8.75 x 10⁶ V/m

Therefore, the magnitude of the electric field in the membrane is 8.75 x 10⁶ V/m.

To know more about magnitude visit:

brainly.com/question/14452091

#SPJ11

A fuel cell is an electrochemical device that generates electricity through a chemical reaction between a fuel, such as hydrogen, and an oxidizing agent, such as oxygen or air.

The working principle of an H2-O2 fuel cell can be described as follows:

They have applications in various sectors, including transportation, stationary power generation, and portable electronics, offering a clean and efficient alternative to conventional energy sources.

To learn more about hydrogen gas,visit here

https://brainly.com/question/32820779

#SPJ11

The challenges associated with current subsidy strategies for agriculture are:

Therefore, the correct options are A and B.

Current agricultural subsidy policies present difficulties because they often reward high input and production levels, raising questions about sustainability and the environment. Crop-specific subsidies can also affect production costs and inadvertently promote more input-heavy farming methods.

Therefore, the correct options are A and B.

Learn more about agricultural subsidy, here:

https://brainly.com/question/32757185

#SPJ4

A maculopapular rash with a red base and a small white papule in the center is commonly associated with erythema toxicum, which is option D.

It is considered a benign and self-limiting condition, often resolving within a few days or weeks without treatment. They can be present at birth or develop later in childhood and are associated with various conditions.

To learn more about toxicum, visit here

https://brainly.com/question/30580472

#SPJ11

The serous membrane lining the thoracic cavity is the pleural membrane.The pleural membrane is the serous membrane lining the thoracic cavity, or the membrane that surrounds the lungs.

Pleural membranes are composed of two layers: the visceral pleura, which lies adjacent to the lungs and the parietal pleura, which lines the inside of the chest wall. The space between the two membranes is known as the pleural space, which contains a small amount of fluid that lubricates the pleural surfaces and allows them to move smoothly during respiration.

The answer is Pleural membrane. The serous membrane lining the thoracic cavity is the pleural membrane.The serous membrane lining the thoracic cavity is the pleural membrane. It is made up of two layers: the visceral pleura, which lines the lungs, and the parietal pleura, which lines the inside of the chest wall.

The pleural membrane is a serous membrane that covers the lungs and lines the thoracic cavity, consisting of two layers, the visceral pleura, which lines the lungs, and the parietal pleura, which lines the inside of the chest wall. The space between the two layers is called the pleural space, and it contains a small amount of fluid that allows for smooth movement during respiration.

To know more about thoracic cavity visit:

brainly.com/question/28321203

#SPJ11

The catabolic metabolic pathway refers to the breakdown of molecules to release energy. Among the options provided, nutrient utilization is the catabolic pathway.

This process involves the breakdown of nutrients such as glucose, amino acids, and fatty acids to produce ATP, the energy currency of cells.
When nutrients are consumed, they undergo various catabolic reactions. For instance, glucose is broken down through a series of reactions called glycolysis, which occurs in the cytoplasm. This process converts glucose into pyruvate, producing a small amount of ATP. Pyruvate can then enter the mitochondria, where it undergoes further breakdown through the citric acid cycle and oxidative phosphorylation, generating a large amount of ATP.
In contrast, nutrient storing tissue synthesis, nutrient transport, and adipose tissue storage are anabolic processes that involve the synthesis and storage of molecules. These pathways require energy input and are involved in building complex molecules, such as glycogen or triglycerides, for storage and later use.

Therefore, the correct answer is "nutrient utilization" as the catabolic pathway among the options provided.
It's important to note that adipose tissue stores are indeed regulated and do not fluctuate significantly with diet. This statement is true.

To know more about molecules visit:

https://brainly.com/question/32298217

#SPJ11

The na /k pump removes 3 na ions and adds 2 k ions. The sodium-potassium pump, also known as the Na+/K+ pump or Na+/K+-ATPase, is an integral membrane protein found in the plasma membrane of cells. The correct answer is (a) 3; 2.

This action helps establish and maintain the concentration gradients of these ions, which are essential for various cellular processes such as nerve impulse transmission and muscle contraction. The correct answer is (a) 3; 2.

To learn more about potassium ions, visit here

https://brainly.com/question/6612549

#SPJ11

There are approximately 4 calories in one gram of carbohydrate. This value is an approximation based on the fact that carbohydrates provide approximately 4 kilocalories (kcal) or 4,000 calories per gram.

The term "calories" used in nutrition refers to kilocalories, which are commonly denoted as "cal" on food labels.Carbohydrates are one of the three main macronutrients, along with proteins and fats, that provide energy to the body. When consumed, carbohydrates are broken down into glucose, which is the primary source of energy for the body's cells.

Each gram of carbohydrate, when metabolized, releases approximately 4 kilocalories or 4,000 calories of energy.It's important to note that the calorie content of carbohydrates can vary slightly depending on the specific type of carbohydrate, such as simple sugars or complex carbohydrates.

However, as a general rule, the approximation of 4 calories per gram of carbohydrate is widely used in nutritional calculations and labeling.

For more such questions on calories

https://brainly.com/question/11460467

#SPJ8

The superior portion of the coxal bone is called the ilium. The coxal bone is also known as the hip bone or pelvic bone.

It is made up of three parts that fuse together in the adult to form a single bone: the ilium, the ischium, and the pubis. The ilium is the largest of the three parts and forms the superior and lateral aspect of the coxal bone.

It has a large, curved body that articulates with the sacrum to form the sacroiliac joint. The iliac crest is the superior border of the ilium, which can be felt as a bony ridge on the surface of the hip.

The iliac fossa is a concave surface on the internal surface of the ilium.

To know more about pelvic bone visit:

https://brainly.com/question/28599598

#SPJ11

Soil texture and structure are key factors influencing various soil properties that impact plant growth, water filtration, engineering applications, nutrient cycling, carbon storage, and soil organism habitats. Understanding and managing soil texture and structure are important for optimizing these soil forming factors.

Soil texture and structure can have significant impacts on each of the six soil forming factors:

1. Plant Growth: Soil texture refers to the relative proportions of sand, silt, and clay particles in the soil. A soil with a loamy texture is ideal for plant growth as it provides good water-holding capacity, aeration, and nutrient availability.

2. Water Filtration: Soil texture affects water filtration by influencing the infiltration rate and water-holding capacity. Clayey soils, with smaller particles, have lower infiltration rates but higher water-holding capacity.

3. Engineering Medium: Soil texture and structure impact the engineering properties of soil, such as its strength, compressibility, and permeability.

4. Cycling of Nutrients: Soil texture and structure influence nutrient availability and cycling. Clayey soils have higher nutrient-holding capacity due to their small particle size and larger surface area, which can retain nutrients for longer periods.

5. Carbon Storage: Soil texture and structure play a role in carbon storage. Organic matter, which contains carbon, tends to bind more strongly to clay particles, increasing carbon storage in clayey soils.

6. Habitat for Soil Organisms: Soil texture and structure provide habitats for soil organisms. Soil organisms, such as bacteria, fungi, and earthworms, require pore spaces for movement and air exchange.

To know more about Organic visit:

https://brainly.com/question/12825206

#SPJ11

Answer:

The membrane potential of the neuron could be best described polarized.

Explanation:

During resting potential, the neuron maintains a polarized state where the interior is negatively charged compared to the exterior. This polarization is sustained by an uneven distribution of ions across the neuronal membrane, with more positive ions on the outside and more negative ions on the inside. This generates an electrical potential across the membrane, contributing to the polarized condition.

The correct answer is "syntrophy." In a syntrophic relationship, two or more different microorganisms live together in a habitat and exchange nutrients or metabolic byproducts that are essential for each other's survival.

Syntrophy is an important concept in microbial ecology and plays a significant role in various ecological processes.

To learn more about Syntrophy, visit here

https://brainly.com/question/32756588

#SPJ11

Incomplete dominance refers to a pattern of inheritance where the heterozygous phenotype is intermediate between the two homozygous phenotypes. The correct answer is D) incomplete dominance.

Therefore, the bell-shaped distributions seen in F2 and F3 crosses are typical of incomplete dominance inheritance.The correct answer is D) incomplete dominance.

To learn more about dominance, visit here

https://brainly.com/question/28298847

#SPJ11

If the system noise temperature is reduced, then the SNR increases. The amount of increase depends on the reduction in the noise temperature.  Therefore, the SNR increases.

The signal-to-noise ratio (SNR) is a measure of the signal strength to noise power ratio. It represents the ratio of the power of a signal compared to the power of background noise.

When it comes to how the SNR changes in different scenarios, we can answer the following:

If the range is decreased by a factor of 10, then the SNR decreases by 20 dB.

This is because the power of the signal decreases with the square of the range, whereas the noise remains constant. So, decreasing the range by a factor of 10 decreases the power of the signal by 100 times, or 20 dB.

If the transmit power is doubled, then the SNR increases by 3 dB.

This is because the power of the signal increases by 2 times, whereas the noise remains constant. So, doubling the transmit power increases the power of the signal by 2 times, or 3 dB.If the receive antenna diameter is halved, then the SNR decreases by 6 dB.

This is because the gain of an antenna is proportional to the area of the antenna, so halving the diameter reduces the gain by a factor of 4, or 6 dB.

If the system noise temperature is reduced, then the SNR increases. The amount of increase depends on the reduction in the noise temperature.

For example, if the noise temperature is reduced by 10 times, then the SNR increases by 10 dB.

This is because the noise power is proportional to the noise temperature, so reducing the noise temperature reduces the noise power. Therefore, the SNR increases.

To know more about information visit;

brainly.com/question/33427978

#SPJ11

In conclusion, the apical meristems of a plant are responsible for the primary growth of the plant, which is the growth in length, and this is achieved through the production of new cells that differentiate into different types of cells that make up the shoot and root systems of the plant.

The apical meristems of a plant are responsible for the primary growth of the plant. The apical meristem is a type of meristem that is found at the tips of stems and roots. The main function of the apical meristem is to produce new cells for the growing plant. These new cells are responsible for the primary growth of the plant, which is the growth in length. The cells produced by the apical meristem are called meristematic cells, and they are undifferentiated cells that have the ability to divide and differentiate into different types of cells. The apical meristem is responsible for the production of all the cells that make up the shoot and root systems of the plant. In conclusion, the apical meristems of a plant are responsible for the primary growth of the plant, which is the growth in length, and this is achieved through the production of new cells that differentiate into different types of cells that make up the shoot and root systems of the plant.

To know more about meristems visit:

https://brainly.com/question/28956196

#SPJ11

Endotherms have to consume more food to generate the necessary heat to maintain a constant body temperature. Endothermy is advantageous in cold environments since it allows the organism to maintain a stable body temperature even when the surrounding temperature drops.

One of the main disadvantages of being an endotherm is that it requires a lot of energy to maintain body temperature. Endothermy is a mechanism that allows an organism to regulate its body temperature internally, regardless of the temperature of the surrounding environment.An endotherm is an animal that generates and maintains its body temperature by using metabolic heat production. However, being an endotherm has some disadvantages. One of the main disadvantages of being an endotherm is the requirement of a substantial amount of energy to regulate body temperature. The high metabolic rate associated with maintaining an optimal body temperature requires more energy than other organisms, which can lead to increased food requirements and a greater need for oxygen consumption. Endotherms have to consume more food to generate the necessary heat to maintain a constant body temperature. Endothermy is advantageous in cold environments since it allows the organism to maintain a stable body temperature even when the surrounding temperature drops.

To know more about Endotherms visit:

https://brainly.com/question/11902331

#SPJ11

Enzymes are biological catalysts that speed up the rate of chemical reactions in living organisms. The rate at which enzymes catalyze a reaction is influenced by the substrate concentration, enzyme concentration, and temperature.

The Michaelis-Menten equation is used to model enzyme kinetics. Vmax is the maximum velocity of an enzyme-catalyzed reaction. Km is the Michaelis constant, which represents the concentration of substrate when the reaction is happening at half its maximum velocity.

The steps to calculate Vmax and Km for enzyme activity data are as follows:

Step 1: Plot the data using the Michaelis-Menten equation's reciprocal form.

On the x-axis, plot 1/[S], which is the inverse of substrate concentration, and on the y-axis, plot 1/v, which is the inverse of the initial reaction rate.

Step 2: Determine the slope of the line, which represents Km/Vmax.

Step 3: Calculate Vmax by dividing 1 by the y-intercept. In the equation, the y-intercept corresponds to 1/Vmax. When the x-axis value is zero, the y-intercept is achieved.

Step 4: Determine Km by multiplying Vmax by the slope of the line. To calculate the enzyme-substrate affinity, divide Km by enzyme concentration.

Km = (slope)(Vmax) and Vmax = 1/y-intercept

These calculations can help us understand the characteristics of enzyme kinetics.

A high Km value means a lower affinity between enzyme and substrate, while a low Km value means a higher affinity between enzyme and substrate.

To know more about Enzymes visit;

brainly.com/question/31385011

#SPJ11

Laboratory items that are commonly used to inhibit the growth of most types of microorganisms by altering their environment include:

It's important to note that the selection and use of specific laboratory items to inhibit microbial growth depend on the specific microorganisms being targeted and the experimental requirements.

To learn more about microorganisms, visit here

https://brainly.com/question/9004624

#SPJ11

Barriers that limit or reduce gene flow between different populations or species, resulting in reproductive isolation, are known as reproductive isolation mechanisms. The correct options for 20, 21, 22, 23, 24 and 25 are A, E, F, B, D and C respectively.

20. Because female sticklebacks mate only with males that display special traits and behaviors, such as bright red coloration on their forewings, occupying a nesting area of ​​algae and water plants, and proper "zig-zag" In dance, the reproductive isolation mechanism involves behavioral isolation.

21. Since the different flower forms of the white sage and black sage plants prevent cross-pollination by their respective pollinators due to physical incompatibility, the reproductive isolation mechanism involved is mechanical isolation.

22. Due to the different breeding seasons and nesting preferences of female erel's flycatchers (fee-be-os and fitz-bees), different species are identified and breeding times are indicated. This reproductive isolation technique uses temporal isolation.

23. Because Carolina yellow jasmine and swamp yellow jasmine, despite their similar appearance, live in different habitats and have different flowering seasons, limiting opportunities for cross-pollination, habitat isolation breeding isolation There is Tantra.

24. Because when Carolina yellow jasmine and swamp yellow jasmine are cross-pollinated, relatively few viable seeds are produced, and some hybrid plants that do germinate die before blooming, making the reproductive isolation mechanism involved non-viable which produces hybrids.

25. When a male liger crosses with a female liger, the offspring, known as ligers, are larger than ligers, display lighter tiger stripes, and have a tendency to swim. This is the reproductive isolation mechanism at work. However, because they cannot reproduce successfully, male ligers are sterile.

The correct options for 20, 21, 22, 23, 24 and 25 are A, E, F, B, D and C respectively.

Learn more about Reproductive isolation mechanism, here:

https://brainly.com/question/33566894

#SPJ4

Your question is incomplete, most probably the complete question is:

Matching Questions 20-25:

For each example below, decide which reproductive isolation mechanism is involved. Each question below will have only one correct answer.

a. Behavioral isolation

b. Habitat isolation

c. Hybrids are sterile.

d. Hybrids are not viable.

e. Mechanical isolation

f. Temporal isolation

20. Female sticklebacks will only mate with males that have certain characteristics and behaviors. These include: - Mảle must have a bright red color on his front, just under his head - Male must have a territory with a nest of algae and water plants - Male must approach female and do a proper "zig-zag" dance

21. Two species of sage plants, white sage and black sage, occur in the sage community of California. Black sage flowers are small and tube-shaped. Their flowers are pollinated by at least 13 different animals, including small and medium-sized insects. White sage flowers have a very different shape, with a greatly extended lip. Only four species of very large bees pollinate white sage flowers. Due to flower shape differences, pollinators of white sage flowers cannot pollinate black sage flowers. Pollinators of black sage flowers are too large to pollinate white sage flowers.

22. The Iraill's Flycatcher was originally considered to be one species with Accessibility: Good to go differences, pollinators of white sage flowers cannot pollinate black sage flowers. Pollinators of black sage flowers are too large to pollinate white sage flowers.

23. Carolina yellow jasmine and swamp yellow jasmine are both found in Georgia. While the flowers of both plants look identical, the swamp yellow jasmine flowers have no smell and their leaves are larger. Both flowers are pollinated by the same pollinators, especially apid bees. Cross-pollination between the two plants rarely occurs. Carolina yellow jasmine begins to flower in mid-February, peaks in late February through early March, and finishes in mid-March. Swamp yellow jasmine begins to flower in late March, peaks in early April and finishes in mid-April.

24. When Carolina yellow jasmine and swamp yellow jasmine are crosspollinated in greenhouses, very few seeds are produced. Most of the few hybrid seeds cannot germinate. In the rare cases of hybrid seed germination, all hybrid plants died before flowering.

25. When a male lion is crossed with a female tiger, the resulting offspring is a liger. Ligers are larger than lions, with very pale tiger strips, and like to swim. Ligers often thrive and live to old age. Male ligers are sterile.

The study design described in the scenario is an example of a prospective cohort study.

The exposed group is the farm workers working with livestock and the unexposed group is the veterinarians. They then observe these groups for a period of 10 years to assess the incidence of bovine spongiform encephalopathy.

To learn more about prospective cohort study, visit here

https://brainly.com/question/30763408

#SPJ11