Answer:
genes for flower color and edge shape are linked. They do not assort independently.
Explanation:
Available data:
test cross between a purple-flowered pea plant having serrated leaves and a white-flowered pea plant having smooth edges.serrated leaves → dominant trait smooth edges → recessive traitpurple color → dominant traitwhite color → recessive traitF1: 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth.There are two genes involved in the cross. The expected ratios are 1:1:1:1 because we assume genes assort independently. However, we see a different phenotypic distribution. When phenotypic ratios differ from the expected ones, it means that genes are linked.
To know if two genes are linked in the same chromosome, we must observe the progeny distribution. If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. But if instead of this distribution, we observe a different one, that is that phenotypes appear in different proportions, we can assume that genes are linked in the double heterozygote parent
Sickle-cell anemia is caused by a mutation that changes the second nucleotide of the codon from GAG to GUG. This results in a change of the amino acid from glutamic acid to valine. If the mutation affected the third nucleotide of the codon and changed GAG to GAU then the amino acid would change from a glutamic acid to aspartic acid. Would you predict this change to have the same effect
Answer:
This change would be predicted to have less effect compared to the change of the amino acid from glutamic acid to valine.
Explanation:
A conservative mutation is a type of mutation that leads to the replacement of one amino acid by another with similar properties. Both glutamic acid and aspartic acid are similar in size and biochemical properties. These amino acids are acidic dicarboxylic acids (i.e., they contain two carboxyl groups or ―COOH). The side chains of both glutamic acid and aspartic acid are similar, with the exception that glutamic acid contains one additional methylene group in its side chain.
what are the types of tropism
Answer:
Forms of tropism include phototropism (response to light), geotropism (response to gravity), chemotropism (response to particular substances), hydrotropism (response to water), thigmotropism (response to mechanical stimulation), traumatotropism (response to wound lesion), and galvanotropism, or electrotropism (response to electric current).
Tropism is a response to certain stimuli. A positive tropism is moving towards the stimuli, while a negative tropism is moving away from a stimuli.
Positive Phototropism - Growing towards light
Negative Phototropism - Growing away from light
Positive Thigmotropism- Moving towards touch
Negative Thigmotropism- Moving away from touch
Positive Hydrotropism - Growing towards water
Negative Hydrotropism - Growing away from water
Positive Gravitropism - Growing towards ground
Negative Gravitropism - Growing upwards
Traits can also be
, which means they can be masked
Answer:
is that a question?
Explanation:
Using complete sentences, explain how proximity to major rivers influenced the location of early cities.
Answer:
Locations along rivers meant faster travel upstream and downstream to rule territories. The city became the place where the ruler or rulers lived together in a stationary spot. The city's location along early rivers encouraged stronger government, which in turn encouraged stronger cities.
Rivers are one of the most crucial resources that played a major role in the development in ancient times. It led to river valley civilization that influenced the location and kingdoms.
What is river valley civilization?The river valley civilization was one of the most important events that led to the establishment of many kingdoms and regions. The proximity to the river banks influenced many factors.
The cities located on the riverbanks have greater development in services including import, export, travel, agriculture, accessibility, etc. This allowed the people to practice agriculture on a large scale due to the availability of the irrigation system.
The river banks allowed the cities to grow as major trade centers and allowed downstream and upstream travel easier. This also led to the emergence of strong government systems.
Therefore, the proximity to major rivers led to river valley civilization.
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An eagle carries a fish up 50 m into the sky using 90 N of force. How much work did the eagle do on the fish?
(Work: W = Fd)
40 J
59 J
140 J
4500 J
Answer:
4500J
Explanation:
As the formula stated above:
work=force×distance
=90×50
=4500J
What is fermentation
Answer:
Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes.......I am sure this is helpful for you....And have you a great future.....study well plz....first you read your book.....
Biology MCQs please help
(1) Group of cell that work together as one to perform a single function is termed as Tissue . Then the group of tissue combine to form organs and further they combine to organ systems and further they combine to form organ system .
(2) They are unicellular green algae which belongs to family Volvocaceae of the Plantae Kingdom
(3) Hypothesis is the assumption which are taken on the behalf of the observation on small scale . They can be correct or incorrect depends on the number of observation and Hypothesis.
(4) Viruses are included in any of the kingdom because they are on the intermediate line of living and non living as they show properties of non living outside the host and properties of living inside the host
Explain what will happen to your eyes when..
a) you move in a very bright light.
b) you move in a dim light
Answer:
For A your pupils will shrink for B your pupils will dilate.
Answer:
When you look at something that is bright, your pupil may shrink.
When you look at something dim, your pupil may get larger.
Explanation:
I think your pupil may get larger if you look at dim light because your eye may have a hard time seeing what's going on. And the opposite may happen when you look at bright light.
While working with cultured mouse cells, a researcher unknowingly treated the cells with a mutagen that causes the deletion or insertion of individual nucleotides in DNA. Subsequently, she isolated and cultured a single cell from this group. She noticed that the progeny of this cell were not producing a certain protein and that this affected their survival. The mutation would be most harmful to the cells if it resulted in ______.
Answer:
The correct answer is - a single nucleotide insertion near the start of the coding sequence.
Explanation:
Insertion mutations are the mutation that takes place when there is an extra nucleotide is added to the DNA strand during replication and causing the particular protein translation or inhibits the translation if present at the start codon.
It did not allows the translation in this sequence, Deletion, and insertion both are a dangerous mutation that causes the production of unwanted protein or not producing the protein and if this protein is essential for surviving it will lead to cell death.
y’all i need help please help
Answer: It is (D) Skin
Explanation: Skin can absorb materials, it also protects our body, it also regulates our body temp.
Laying the groundwork for the 'germ theory' of disease _________ discovered that organisms cannot spontaneously arise, but must be introduced into an environment.
A. Anthony Van Leeuwenhoek
B. Louis Pasteur
C. Robert Hooke
D. Ernst Ruska
Laying the groundwork for the 'germ theory of disease, Louis Pasteur discovered that organisms cannot spontaneously arise, but must be introduced into an environment.
Who was Louis Pasteur?Louis Pasteur was a chemist and microbiologist. He is known for the discovery of vaccines, fermentation, and pasteurization.
The germ theory is given by Pasteur. He first of all states that process fermentation is done by living organisms, bacteria, and yeast.
Thus, option B. Louis Pasteur is correct.
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Which population is more difficult to count during a survey of biodiversity?
O A clumped population
O A uniform population
A mobile population
O A small population
Answer:
Mobile population
Explanation: I got it right
Which of the following is not true of integrin? Question 4 options: Integrin molecules serve as stable, permanent anchors that anchor a cell to the extracellular matrix. Integrins undergo extensive conformational changes on binding to molecules on either side of the plasma membrane. Certain intracellular chemical signals can activate integrins from inside the cell, causing them to reach out and grab hold of extracellular structures. When integrin binds to the extracellular matrix, it stretches into an extended, activated state to attach to molecules on the inside of the cell.
Answer:
Integrin molecules serve as stable, permanent anchors that anchor a cell to the extracellular matrix.
Explanation:
Integrins are transmembrane protein receptors that attach the cell cytoskeleton to the extracellular matrix (ECM) in animal cells. These glycoproteins (integrins) are highly dynamic heterodimeric molecules that anchor cells in their position and transduce signals into and out of cells. Integrin-ligand binding activates signaling pathways that are involved in fundamental cellular functions including, among others, organization of the cell cytoskeleton, cell migration, regulation of the cell cycle, etc.
The statement i.e. not true is Integrin molecules serve as stable, permanent anchors that anchor a cell to the extracellular matrix.
The following information should be considered:
Integrins are considered to be the transmembrane protein receptors that attach the cell cytoskeleton to the extracellular matrix (ECM) in animal cells. These glycoproteins (integrins) are highly dynamic heterodimeric molecules that anchor cells in their position and transduce signals into and out of cells.Integrin-ligand binding activates signaling pathways that are involved in fundamental cellular functions including, among others, organization of the cell cytoskeleton, cell migration, regulation of the cell cycle, etc.Learn more: brainly.com/question/16911495
Which group evolved first?
rays
skates
sharks
chimaeras
Answer:
C - Sharks; (took the test)
Explanation:
Sharks evolved nearly 420 million years ago. Chimeras, skates, and rays are all related to sharks through their ancestry.
Answer:
I hope this helps.
Explanation:
What kind of rock is this?
igneous
Where would this rock most likely be formed?
To which group of rocks would this rock belong?
Rocks can be classified based on texture. The
size of the grains in a rock affects its texture.
Coarse-grained rocks have large grains, and fine-
grained rocks have small grains.
Rocks formed from magma under Earth's surface
have larger grains than rocks formed from lava
on Earth's surface. This is because magma cools
slower underneath the ground than it does above
ground.
Metamorphic Rock Isua
Metamorphic rock, estimated to be as old as 3.8 billion years, located near Isua at Qorqut Sound, Greenland.
Answer:
What kind of rock is this?
✔ igneous
Where would this rock most likely be formed?
✔ underneath Earth’s surface
To which group of rocks would this rock belong?
✔ coarse-grained rocks
Explanation:
Just worked on this assignment
The corpus callosum separates the brain into two halves. separates the brain into two halves. is a large network of neurons on the cerebral cortex. is a large network of neurons on the cerebral cortex. is a thick band of neural fibers enabling communication between the two brain hemispheres. is a thick band of neural fibers enabling communication between the two brain hemispheres. describes the hemispheres of the brain
Answer:
is a thick band of neural fibers enabling communication between the two brain hemispheres.
Explanation:
A brain can be defined as an organ of soft nerve tissue that is found in the skull of vertebrates and it's typically responsible for the coordination of nervous activities, intellect and sensation.
The human brain consists of various sections and these includes;
I. Anterior Cingulate Cortex (ACC) which resembles a bow or collar surrounding the frontal part of the corpus callosum. This is the frontal part of the cingulate cortex which helps to make complex cognitive functions such as impulse control, decision-making, emotions and empathy.
II. Ventral prefrontal cortex in humans are interconnected with the brain and are responsible for the processing of risk, empathy, fear and social decision-making
III. The Cerebral Cortex: this part of the brain primarily comprises of grey matter, foldable sheets of neurons and forms its outermost layer. Therefore, cerebral cortex is known as the outermost layer of the brain (cerebrum) and thus, makes up half of its weight. It is about 2.5 millimeters in thickness and as such it's able to fold.
The corpus callosum is a large, thick band of C-shaped neural fibers found beneath the cerebral cortex and it's saddled with the responsibility of enabling communication between the two brain hemispheres i.e the right hemisphere and the left hemisphere.
Question 1 of 25
The overall increase in the amount of carbon dioxide in the atmosphere
directly corresponds with all of the following except.
A. the decrease in the growth rate of some human populations.
B. changing weather patterns.
C. the overall increase in average global temperatures.
O D. the melting of the ice caps.
Which can disrupt the cell cycle?
A. mutation
B. GO phase
C. replication
D. cancer
Answer:
Mutation can disrupt the cell cycle.
50 POINTS!!! The forces of nature are all around us working to shape the surface of our planet. Your task is to search the globe for three examples of land formations shaped by surface events. You will create a presentation to demonstrate your knowledge on this topic. You may choose to create a travel brochure, a vacation scrapbook, or a presentation using software.
Be sure to include the following for each land formation you choose:
a picture (you may hand draw, take photos in nature, or use stock images)
a complete explan
Answer:
Four major landforms are
A) Mountains B) hills C) plains D) plateaus
Explanation:
I hope this helps you out a little!
In paragraph form (automatic 1-pt deduction if not), explain the evolutionary benefits of sexual reproduction as a means of increasing variation. Be sure to include (a) at least two ways in which sexual reproduction impacts genotype (i.e. genetic effects), and (b) two ways in which sexual reproduction may affect phenotype (i.e. trait effects).
Answer:
See explanation
Explanation:
According to the theory of evolution,species which are better adapted to their environment tend to survive and reproduce in a population passing on these favourable characteristics to their offsprings.
During sexual reproduction, genes can be arranged in new ways from chromosomal crossing over and recombination. This introduces new gene combinations(genotype) and ultimately variation in the population.
This variation may also lead to the observation of new phenotypes in the population.
Which of these organelles is NOT in animal cells?
Ribosome
Endoplasmic Reticulum
Cell Wall
Which process allows a bacterium to take DNA from its environment and add it to its own genome?
Answer:
b transformation
Explanation:
In transformation, a bacterium takes up a piece of DNA floating in its environment. In transduction, DNA is accidentally moved from one bacterium to another by a virus. In conjugation, DNA is transferred between bacteria through a tube between cells.
From earliest to latest, the overall sequence of early development proceeds as follows: A) gastrulation → organogenesis → cleavage B) ovulation → gastrulation → fertilization C) cleavage → gastrulation → organogenesis D) gastrulation → blastulation → neurulation E) preformation → morphogenesis → neurulation
Answer:
C) cleavage → gastrulation → organogenesis
your welcome!
Explain the characteristics scientists use when observing organisms and placing them in the six kingdoms .
The last option is tt and tt , im really confused on this one
Answer:
im pretty sure its the answer you have!
Explanation:
Explain why your model improves upon the student’s original model. How would your model help someone who was learning about photosynthesis for the first time? Plato question
Answer:
Due to inclusion of more steps of photosynthesis.
Explanation:
My model is more advance than the student's original model which provides more information about the process of photosynthesis to the learners by explaining various parts of photosynthesis. My model presents the various steps of photosynthesis in a very efficient way with the help of including some extra parts. The student's original model is not more advance so it can't provides more information about the process of photosynthesis so that's why my model provides more information about photosynthesis.
Answer:
This model shows all the major molecules involved in the Calvin cycle and how they change at each stage of the process. This added detail would clarify that the Calvin cycle is a series of complex steps. The student’s original model didn’t show this breakdown at all, and it shows only the final products. This model also shows the number of each molecule created, which the original model doesn’t do.
A lion chases an antelope, which narrowly escapes being eaten. Which
energy conversion saved the antelope's life?
Answer:
Chemical energy to kinetic energy.
Explanation:
Answer:
Chemical energy
Explanation:
i think this is your answer for your question i think maybe its correct if its correct pls tell ok
Todos los miembros de dicha familia tienen simpatía por las mismas ideas políticas
Answer:
¿todos los miembros de dicha familia tienen simpatia por las mismas ideas políticas? En las últimas elecciones presidenciales, ¿todos los miembros de dicha familia votaron por el mismo partido?¿Puedes preguntarles cómo votaban los integrantes de esa familia hace veinte años, y hace cincuenta años? ¿Qué ha cambiado? Escribe en tu cuaderno tus averiguaciones
Explanation:
Mi familia tiene diferentes ideales políticos y por eso votaron por diferentes partidos, antes el proceso era manual
En las elecciones actuales les he preguntado a los miembros de mi familia y no todos votaron por el mismo partido político unos creen en uno de los partidos políticos y otros creen en otros. Por lo tanto no todos simpatizan con las mismas ideas políticas
Anteriormente se votaba por medio de un papel escrito, entonces el proceso es mucho más lento y menos automatizado que con maquinas
No, cada familiar tiene una idea política distinta.
-no votaron por el mismo partido político pues siempre algunos presidentes hacen promesas y no las cumplen.
-las votaciones siempre las han realizado por numero de DUI, en institutos o en las calles frente a las alcaldías, tenían que buscar el numero de urna en la cual estaban asignados.
-el cambio a sido la tecnología y el voto residencial, pues con la tecnología se ha hecho mas fácil el cuento de los votos y el voto residencial a permitido que se les facilite asistir al centro de votación.
Explain briefly four
why, peasant
farmers find it diffcult to get
farm credit
Answer:
The peasant farmers operate mainly in the rural environment of the country. They operate on very small holdings using mostly traditional method because, their income is relatively low and the capacity to save is poor. Therefore needs for credit in order to meet the small farmers output and input
What does an Electrocardiogram do?
A. Measures the electrical activity of a heart by measuring the current in the skin above it.
B. Pill that contains 3 grams of electrochemical material that helps keep the electrical current in the heart balanced.
C. Measures how much electrical current can be passed through a heart before it stops beating.
D. Restarts the heart by sending an electrical pulse through it.
Answer:
It actually measures the electrical activity
Explanation:
They are sticky wires that they put on your arms and chest etc
Electrocardiogram measures how much electrical current can be passed through a heart before it stops beating. The correct option is C.
What is electrocardiogram?An electrocardiogram is a simple test that can be employed to check the rhythm and electronics activity of your heart. Sensors connected to the skin detect the electrical signals generated by your heart every time it beats.
The electrical signals in the heart are recorded by an electrocardiogram. It's a prevalent and painless test for detecting heart problems and monitoring heart health.
An electrocardiogram, also known as an ECG, is frequently performed in a doctor's office, clinic, or hospital room.
It is a heart electrogram, which is a chart of voltage over time of the electrical activity of the heart recorded with electrodes placed on the skin.
Thus, the correct option is D.
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