Briefly explain how sexual reproduction generates new allele combinations in offspring.

Answers

Answer 1
First, crossing-over and the subsequent rearrangement of alleles on homologous chromosomes leads to gametes with a new mix of genetic material. Second, when the gametes fuse, new combinations of alleles result.

Related Questions

ASAP
When you become too cold, your hypothalamus will signal what parts of your body to raise the temperature?
A. Muscles and kidneys
B. Skin and pancreas
C. Muscles and skin
D. Kidneys and lungs

Answers

Answer:

c

Explanation:

Muscles and kidneys or muscles and skin

Hibernation is _______.

Answers

Answer:

PROCESS OF SLEEPING FOR MONTHS .

LIKE BEARS,BATS,ETC

Answer:

the condition or period of an animal or plant spending the Winter in a dormant state.

Which of the following statements are true about antibodies?
A. Polyclonal antibodies are part of the natural immune response; monoclonal antibodies are clones of plasma cells used for medical research.
B. Polyclonal antibodies are used for the treatment of cancer; monoclonal antibodies are used for medical research.
C. Monoclonal antibodies work against many types of antigens; polyclonal antibodies work against a specific antigen.
D. Both Polyclonal and Monoclonal antibodies are naturally produced in immune responses.

Answers

Answer:

The answer are A and D.

Explanation:

ANTIBODIES

Antibodies are immunoglobulin produced in the body by B cells to help i

For immune response or fight against any foreign invade in the body.

There are two common classification of antibodies and these are;

1. Monoclonal antibodies are produced in the laboratory that can help to restore and improve the immune system against cancer attack.

They bind to the antigens and are many on the surface of cancerous cells than normal cells. They are use for medical research.

2. POLYCLONAL ANTIBODIES are produced by different B cells the body. They are produced from heterogeneous molecules in live animals. They can bind to numerous antigens. They are part of the natural immune response of the animals. They are produced by injecting the animal with immunogen.

Therefore, Polyclonal antibodies are part of the natural immune response; monoclonal antibodies are clones of plasma cells used for medical research.

Both Polyclonal and Monoclonal antibodies are naturally produced in immune responses

Answer:D

Explanation:

D

A newborn that is SGA would be at risk for which of the following complications?

I. Diabetes
II. Obesity
III. Shoulder Dystocia
IV. Heart Disease

Answers

A newborn that is SGA would be at risk for suffering from Diabetes or Hypoglycemia (Option I).

What is diabetes?

Diabetes is a disease where the individual cannot control the levels of glucose in the blood.

A newborn that is Small for Gestational Age (SGA) shows an increased risk of suffering from Hypoglycemia due to the lack of control of glucose in blood.

In conclusion, A newborn that is SGA would be at risk for suffering Hypoglycemia (Option I).

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what is photosynthesis???​

Answers

the process green plant taking food from sun light is called photosynthetis

Answer:

Photosynthesis is a process through which plants and other organisms transform light energy into chemical energy, which is then released to power the organism's metabolic processes through cellular respiration.

~OAmalOHopeO

If a person has low blood glucose levels, what endocrine gland is the likely cause?

Answers

Answer:The Endorcrine gland most likely responsible is the Pancreas, it causes both high and low blood-glucose levels

Explanation:

Why are NADH and FADH2 necessities in the electron transport chain?


They power the electron transport chain.



They remove electrons from the electron transport chain.



They move down the electron transport chain.



They move electrons to the electron transport chain.

Answers

Answer:

D). They move electrons to the electron transport chain.

Explanation: Just took the quiz

NADH and FADH₂ are necessities in the electron transport chain because: They move electrons to the electron transport chain. (Option D)

NADH (nicotinamide adenine dinucleotide) and FADH₂ (flavin adenine dinucleotide) are molecules that play a crucial role in the electron transport chain (ETC) of cellular respiration. These molecules are electron carriers that are generated during earlier stages of cellular respiration, such as glycolysis and the citric acid cycle.

In the electron transport chain, NADH and FADH₂ donate the electrons they have gained from the breakdown of glucose and other molecules. These high-energy electrons are then passed along a series of protein complexes embedded in the inner mitochondrial membrane. As the electrons move through these protein complexes, their energy is used to pump protons (H+ ions) across the inner mitochondrial membrane, creating a proton gradient.

The proton gradient generated by the movement of electrons is used to drive the enzyme ATP synthase, which synthesizes ATP (adenosine triphosphate) from ADP (adenosine diphosphate) and inorganic phosphate. This process is known as oxidative phosphorylation.

In summary, NADH and FADH₂ are essential in the electron transport chain because they provide the high-energy electrons needed to establish the proton gradient, which ultimately powers the synthesis of ATP through oxidative phosphorylation.

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What is the function of the Xylem in a leaf?

Answers

A leaf is xylem the of function the is what

which of these is a direct consequence of air pollution on human health A. bioremediation B. respiratory illness C. damaged hearing D. high blood pressure​

Answers

Answer:

B. respiratory illness

Explanation:

Air pollution causes humans to breathe unhealthy air which can lead to respiratory illnesses.

explain what is meant by a ' reactant ' .​

Answers

Explanation:

A substance that enters into and is altered in the course of a chemical reaction.

hope are you understand

A thing that enter and goes out

3. Suppose you work for a Blabbit Labs, the developer of many different pharmaceutical products. Your research
division has stumbled across a new drug that you believe cures male pattern baldness. Before you can start selling the
drug, you must demonstrate to the U.S. Food and Drug Administration that the drug is effective.
a. What is the question being asked?

Answers

First I would ask if it is safe. Is there any side effects? Does it contain anything that may cause an allergy reaction?

In regards to the information given, the question being asked should be”Is the drug that is believed to cure male pattern baldness effective?” although I’m not completely sure that was what you were looking for but I hope that helped!!

what is most important in life of human beings

Answers

Answer:

it has to be human values unless if the question is emphasizing on something materialistic

how many hearts does the octopus have ?​

Answers

Answer:

3

Explanation:

Answer:

Three hearts

Explanation:

One heart pumps blood throughout the body, while the other two pumps oxygen-rich blood through the gills.

OAmalOHopeO

+10 POINTS! AND BRAINLIEST!


The number of chromosomes within each species of plant or animal:
A. is constant is
B. reduced in half with reproduction
C. is always 46
D. varies

Answers

Answer:

is always 46

Explanation:

46 is the correct answer

Answer:

the answer is a.

Explanation:

if you are talking about only within a specific species, then the number of chromosomes is supposed to stay constant within that species. however, chromosome disorders do exist, but they are relatively rare.

hope this helped!!

The results of an investigation are the

Answers

Answer:

dependent variable or conclusion

Which capacity makes living beings to adjust in hard environment

Answers

The biological referred to as Adaptation makes living beings to adjust in exhausting atmosphere.

Adaptation, in biology, is that the method by that species measure suitable their several atmosphere, thanks to Natural Selection’s method ensuing into patrimonial variation over many generations.

What is Adaptation?

According to Evolution, Adaptation method is that the process underneath that organisms suits the present atmosphere in conjunction with the modifications thanks to change in atmosphere.

Adaptation is connected with the idea of evolution that was propounded by Darwin and Wallace.

According to Wallace, the evolution of organisms was supported 2 factors: Adaptation and dynamic atmosphere.

To develop the idea of evolution by survival, Wallace and Darwin targeted not solely on straightforward adaptation however additionally proceeded more to clarify however organisms adapt and evolve.

Biologically Adaptation will be in 3 forms:

- Psychological kind

- generative kind

- sequence Frequency

Psychological form- associate degree animal or plant adapt by adjusting consistent with its immediate atmosphere.

Example- modification in temperature or metabolism with a rise in altitude

Reproductive form- method of adaptation thanks to genetic variations among people that is customized i.e. having larger success in—a specific environmental context.

Gene frequency- the method of adaptation happens through associate degree ultimate modification within the sequence frequency relative to blessings bestowed by a selected characteristic, like the coloration of wings within the moths.

Organisms will adapt to associate degree atmosphere in several ways in which. they will adapt biologically, which means they alter body functions

Example- individuals living at high altitudes have evolved changes in their body chemistry and may survive at high altitudes for a brief time as a result of their bodies raise their levels of hemoprotein.

They can additionally exhibit activity adaptation.

Example of activity adaptation is however emperor penguins in Antarctica foregather to share their heat within the middle of winter.

What is theory of Natural Selection?

The theory of survival was given by Darwin in 1859.

Natural selection is that the method through that populations of living organisms adapt and alter.

Individuals in an exceedingly population square measure naturally variable, which means that they're all completely different in some ways in which.

This variation means some people have traits higher suited to the atmosphere than others. people with adaptive traits—traits that provide them some advantage—are a lot of seemingly to survive and reproduce.

These people then pass the adaptive traits on to their offspring. Over time, these advantageous traits become a lot of common within the population.

Through this method of survival, favorable traits square measure transmitted through generations.

Natural selection will cause phylogeny, wherever one species offers rise to a replacement and clearly completely different species. it's one among the processes that drives evolution and helps to clarify the range of life on Earth.

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2(8)
Data about CO2ce in the atmosphere and average global temperatures shows that
A. the CO2 concentration has been decreasing and the average global
temperature has been increasing
B. the CO26, concentration has been increasing and the average global
temperature has been decreasing
C. the CO2 concentration has been increasing and the average global
temperature has been increasing
D. there has been no change in either CO2 concentration or the average global
temperature

Answers

Explanation:

Option C is the correct answer.

Antibodies are
1 point
proteins that recognize familiar antigens
proteins that recognize foreign antigens
sugars that recognize familiar antigens
sugars that recognize foreign antigens

Answers

Answer:

proteins that recognize foreign antigens

Which timeline best shows the history of the development of cell theory?

Which organelle is most like a factory delivery driver?

lysosome
endoplasmic reticulum
cytoplasm
nucleus

Answers

Answer:

Cytoplasm

Explanation:

Hope it helps :)

1
R:
2
R:
3
R:
4
R:
5
R:

Answers

Answer:

can you click a photo again

Which of the following species is Endemic?
A. Geese on the East coast of the US
B. African elephants at the zoo
C. Invading Japanese beetles found eating crops in North American farms
D. Lemurs isolated to the island of Madagascar

Answers

Answer:

D. Lemurs isolated to the island of Madagascar

Explanation:

Endemic is to be native and restricted to a certain place.

Endemic species are organisms that are limited and confined to a particular region. Lemurs show endemism as they are isolated to the island of Madagascar. Thus, option D is correct.

What is Endemism?

Endemism is a biological term used to depict the distribution of the organism in an area that becomes its habitat. It is shown by species that are limited and bounded to one geographical location.

Endemism is shown by the species due to genetic isolation that separates the population or the species in a geographical area and does not allow the genetic material to exchange by reproduction.

Koalas and Kangaroos in Australia, Lemurs in Madagascar, lion-tail macaque and Nilgiri blue Robin in India, and camellia plant in Japan are some endemic species.

Therefore, option D. the Lemurs in Madagascar are an example of endemic species.

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What can you learn about by studying DNA?

Answers

Answer:

Explanation:

                  The study of human DNA and genetics can be intellectually fascinating, but it also has plenty of practical applications. From the use of DNA in court cases to the discovery of new therapies for genetic diseases, a thorough understanding of the human genome can have important medical, social and legal impacts.

which of the following best describes the anthers of a flower?

Answers

Answer:

The anthers of a flower are the Male reproductive organ on the top of the stamen, which produce pollen.

List 3 similarities of a virus and bacteria and give evidence from the text

Answers

Answer:

similaritis between virus and bacteria are

Explanation:

1.they are micro organisms

2.they can't be seen with nakes eyes of human

3.bacteria and virus are both living and non living

Which statement describes the genes within DNA?
segments of DNA
a spiral strand
simple chemicals which link the strands
none of the above

Answers

Answer:

Segments of DNA.......

differences between regolith and bedrock in 5 points​

Answers

Answer:

Explanation:

Bedrock is the hard, solid rock beneath surface materials such as soil and gravel. ... Bedrock also underlies sand and other sediments on the ocean floor. Bedrock is consolidated rock, meaning it is solid and tightly bound. Overlying material is often unconsolidated rock, which is made up of loose particles.

Regolith is a blanket of unconsolidated, loose, heterogeneous superficial deposits covering solid rock.

how does a single cell give rise to all the different types of cell, tissue, and organs in human body

Answers

Answer:

Over the course of hours, days, or months, the organism turns from a single cell called the zygote (the product of sperm meeting egg) into a huge, organized collection of cells, tissues, and organs. As an embryo develops, its cells divide, grow, and migrate in specific patterns to make a more and more elaborate body.

I HOPE THIS WILL HELP YOU IF NOT THEN SORRY

HAVE A GREAT DAY :)

a person has a cardiac output of 4.9L per minute. the stroke volume of each heart beat is 70 ML

Answers

that's true

stroke volume is the volume of blood pumped by each ventricle per beat

cardiac output is the blood pumped by ventricles per minute

Is that a question or a statement?

You are overseeing a paleontological expedition at the Grand Canyon to uncover fossils. You have one group working about 10 feet above the bottom of the canyon,
uncovering a cluster of Brachiopods You have a second group working about 300 feet above the bottom of the canyon, uncovering impressions from a variety of plants
such as fems and horsetails. While you are waiting for the exact age of the rock layers to be determined, what can you tell about the age of the fossils based on
where they are
A. You cannot determine anything yet.
B. They are all about the same age.
C. The plants must be older than the Brachiopods.
D. The Brachiopods must be older than the plante

Answers

Answer:

C

Explanation:

because the plants are farther down lol

Paleontology establishes the geological age of the organisms. Based on the height of the fossils discovered at the Grand Canyon, it can be concluded that plants were older than the Brachiopods. Thus, option C is correct.

What are fossils?

The dead remains and decaying materials of the plants and animals stored and preserved under the sediments and rock layers over a period of many years are said to be called fossils.

The fossils are evidence of the evolution as well are used to determine the geological age of the species based on their occurrence of them in the rock layers.

The fossils of plants like horsetails and ferns were found 300 ft above the Canyon while Brachiopods at 10 feet above Canyons that tell that plants were found earlier than the former species.

Therefore, option C. the plants existed prior to the Brachiopods.

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why was domesticating and confining animals so important to the food supply of early civilization

Answers

Answer:

Image result for why was domesticating and confining animals so important to the food supply of early civilization

Throughout history, people have bred domesticated animals to promote certain traits. Domestic animals are chosen for their ability to breed in captivity and for their calm temperament. Their ability to resist disease and survive in difficult climates is also valuable.

Explanation:

Domestication of animals help the humans in many ways for eg; Cows and goats gave them milk and meat , Cattle also helped them in ploughing the fields also Cattle and sheep are kept for their wool, skins, mea,t and milk, large animals can also be used to do physical work like carrying things or plowing the field

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