You compare homologous nucleotide sequences among several pairs of species with known divergence times. A pair of species that diverged 1 million years ago has two nucleotide differences, a pair that diverged 2 million years ago has four nucleotide differences, and a pair that diverged 3 million years ago has six nucleotide differences. You have sequence data for another pair of species for which the divergence time is unknown. There are five nucleotide differences between them. Based on your clock, when did their line of ancestry diverge?
A. 3.5 million years ago
B. 2 million years ago
C. 3 million years ago
D. 2.5 million years ago

Answers

Answer 1

Answer:

Option D, 2.5 million years ago

Explanation:

Given

Pair of species that diverged 2 million years ago has four nucleotide differences

Pair of species that diverged 3 million years ago has six nucleotide differences

A pair of species X has diverged Y million years ago and has five nucleotide differences

These facts clearly indicate that the pair of species X has diverged between the 2 and 3 million years ago as 2 million year ago there was four nucleotide differences and 3 million years ago there was six nucleotide differences. Hence, 5  nucleotide differences would occur in pair of species that diverged between 2 and 3 million years ago.

Thus, option D is correct


Related Questions

Please help!!!!!!!! I just need the graph ill mark brainiest
For this assignment, you will ask questions about the factors that have caused a rise in global temperatures over the past century. Then, you will conduct research to answer your questions. You will also graph provided information, analyze the graphs, and make conclusions based on the graphs. Finally, you will write a paper describing the conclusions of your research and graphs.

Answers

Explanation:

we can't do the graph for you

My project is in the file attached, lots of thanks to Maxineishere for helping me with the essay. You may need adobe reader for this as the files are PDF files, I hope you are satisfied! :)

DATE ANSWERED: 5/8/2021

Question 2 of 10 Which statement does not describe the relationship between genes and inherited traits?

A. Some inherited traits are affected by more than one gene.

B. Inherited traits carry the instructions for individual genes.

C. Individual genes carry the instructions for inherited traits.

D. Some genes influence more than one inherited trait.

Answers

Answer:

B. Inherited traits carry the instructions for individual genes.

Why does the speaker slow her speech in the last stanza when saying the line, "But miles of barren sand"?
A to create a feeling of emptiness that matches the imagery
B to emphasize that it takes a long time to walk through the desert
C to emphasize the stressed and unstressed syllables in the line
D to create a feeling of peace that matches the imagery​

Answers

Answer:

Maybe D

Explanation:

Hope this helps! Have a nice day! Owa Owa!

Probably: D


“Why”? It makes better since than the rest even though I haven’t read the story! Goodluck

Beanie Eyelash is a celebrity who does not have a widows peak, while Chris Hemsworth is a celebrity who does. What is a widows peak an example of?

A polygenic traits
B single allele genotypes
C polygenic genotypes
anyone knows whats the answer for this!

Answers

Answer:

polygenic traits so your answer should be a

Choose the layers that are permeable?
layer of loose soil

layer of sand

layer of gravel

layer of hard clay

solid rock

Answers

Answer:

solid rock it may be correct i guess

Answer:

clay is the least

soil is porous not so much permeable

sand is porous and permeable

but gravel is the highest

The heart works as
A. One pump
B. Two pumps

Answers

Answer: Hello, There!  your Answer is Below

B. Two pumps

Explanation:

Your heart is divided into two separate pumping systems, the right side and the left side. The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide.

Hope this helps you!!

Have a great day!!!

The heart works as two pumps.The right pump moves blood from the heart to the lungs to pick up oxygen and release carbon dioxide, then back to the heart. The left pump moves blood around the body.

Create a ranking system for the terms from one to six. The first one has been completed for you. Rank the remaining terms as two through six.

1) letter


chapter

word

page

book

sentence

Answers

Answer:

2 - word

3 - sentence

4- page

5 - chapter

6 - book

The response of an organism to the number of hours of darkness in its environment is called ?

Answers

Answer:

Photoperiodism is a plant's response to the number of hours of darkness in its environment. b. Plants that flower when exposed to less than 10–12 hours of darkness are called long-day plants.

Explanation:

Nutrients are molecules that can be found in______​

Answers

Answer:

food

Please mark as brainliest if answer is right

Have a great day, be safe and healthy  

Thank u  

XD  

Someone help!!


Help me write a brief summary of “herpes”-
what causes it-

Who is most at risk and why-

What part of the body it
targets and how it affects it-

How can ppl prevent it or cure it-
And the treatments that may help the disease-

Answers

Answer:

There is no cure for herpes but medication can be taken to help it.

Explanation:

This is word for word from medlineplus. org

"Herpes is an infection that is caused by a herpes simplex virus (HSV). Oral herpes causes cold sores around the mouth or face. G*nital herpes affects the genitals, b*ttocks or an*l area. G*nital herpes is a s*xually transmitted disease (STD)."

CDC. gov says

"Herpes infection can cause sores or breaks in the skin or lining of the mouth, v*gina, and rectum. This provides a way for HIV to enter the body. Even without visible sores, having g*nital herpes increases the number of CD4 cells (the cells that HIV targets for entry into the body) found in the lining of the g*nitals."

If you need help paraphrasing try using https://quillbot. com/

Hope that was helpful!

In two or more complete sentences, describe a scenario where human activities are related to an increase or decrease in blodiversity in an ecosystem. Write your answer in the essay box below

Answers

Answer:

Deforestation and loss of green areas so that factories can use those areas for their benefit, exploiting the natural resources around them decrease an ecosystem's biodiversity. The invasion of industrial areas and excessive use of their natural resources causes a disbalance in the ecosystem because the plants, water, nutrients, minerals, amongst other elements, are used by industries killing animals and species, reducing populations due to pollution, and lack of food.

Explanation:

An ecosystem is a system where animals and living organisms, such as plants or bacteria, live together with nonliving elements. Living organisms interact with each other and with nonliving ones to keep the system balanced.

We can define biodiversity as the variety of living things that exist in an ecosystem.

Human activities like deforestation and the building of big factories near areas with large amounts of natural resources lead to the killing of many species. As industries kill in excess species, or they pollute an ecosystem's soil and water, the species' population decreases. Asa result, there is a disbalance in the ecosystem.

A human activity that increases biodiversity is the protection of endangered animals or laws to protect natural areas where there are many species of plants and animals that are of high importance for the planet.

help please will mark brainlyest

Answers

The anwser is Aquitard! The deepest layer

in 2018, 2019, and 2020, how many people were diagnosed with AIDS? please add a graph or chart.

Answers

Answer:

Best I could get ya, sorry :(

Explanation:

Answer:

the guy above me or under already said so YEAH

Explanation:

please help me if you can

Answers

Answer:

50%

Explanation

        G     G

g       Gg    Gg

g       Gg     Gg

since each box has Gg it has to be 50%

ifyou have a punnet square with gg and GG what percentof offfspring will have green feathers?

Answers

Answer:

60% is true answer is final answer you

What is a general name for all the parts within a cell?

Answers

Answer:

look at the explanation

Explanation:

A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm.

Hope this helps!

heyyyyyyyy why u gotta have no brains?​

Answers

crying ,,,,,,,,,,,,,

Mention two similarities between solid and gas.​

Answers

Two similarities are: Volume and Shape


During a research project on the tundra, students selected important information about the biome which is shown below:

The tundra is known for its low temperatures, low precipitation, and layer of permafrost. The growing season is about 50-60 days. Temperatures range from an average of -34oC in the winter to an average of 8oC in the summer.

Some organisms that live in the tundra are:

low shrubs lemmings

mosses hares

lichen foxes

grasses polar bears

grasshoppers

mosquitoes

Part A Explain the reasons for the short growing season and analyze how that affects plant reproduction.

Part B Describe a characteristic of the tundra not given above. Explain how it affects the organisms living there.

Part C Describe one possible adaptation of one of the animals listed that enables it to live in the tundra. Explain your answer.

Part D If a medical doctor visited the tundra and claimed it contained more animal species than any other biome, do you consider the doctor's claim accurate or not? Give reasons for your answer.

Answers

I think that never mind

How can the carrying capacity of an ecosystem change?​

Answers

Answer: Carrying capacity can be decreased by disease, an increase in predation, hunting or harvesting by humans, a decrease in available habitat such as habitat destruction by humans, parasites, competition with another species for a resource, or changes in the weather that make the species less suited to the environment.

Explanation:

To a certain extent, population numbers are self-regulating because deaths increase when a population exceeds its carrying capacity. Disease, competition, predator-prey interaction, resource use and the number of populations in an ecosystem all affect carrying capacity.

Click picture to expand!! Please help me answer. Links will get reported

Answers

Positive charges are transferred from the rod to the fur.

Select all the correct answers.

When monitoring the species on an island, scientists found several members of a new species they had never seen before in their sample. What could this new species mean?

A native species has changed its range.


An invasive species has been introduced into the area.


The scientists failed to detect the species in their previous evaluations of the area.


The species isn’t a part of the ecosystem.

Answers

Answer:

the correct answers are:

a.) a native species has changed its range

b.) an invasive species has been introduced into the area

c.) the scientists failed to detect the species in their previous evaluations of the area

Explanation:

I hope these are correct!

Answer:

a.) a native species has changed its range

b.) an invasive species has been introduced into the area

c.) the scientists failed to detect the species in their previous evaluations of the area

Explanation:

plato (edmentum)

RUTA ALTERNA PARA GENERAR ATP CUANDO NO EXIXTE UNA CONCENTRACION ADECUADA DE OXIGENO

Answers

Una ruta alterna sería la fosforilación oxidativa ya que no necesitan mucho oxígeno.

Which of these energy sources would be classified as a non conventional fossil fuel?
Tar sands oil
Ethanol derived from corn Hydroelectric

Answers

Answer:

Tar sands oil, Producing it releases three times as much greenhouse gas pollution as conventional crude oil does.

Explanation:

Mark brainliest!

All the organism and the non-living parts found in an paricular place that interact with each other is called a(n)

Answers

Answer:

ecosystem

Explanation:

Brainliest please!!

name the peocess used by living things to obtain energy​

Answers

Answer:

All the organisms (plants and animals) require energy for performing various activities and maintaining their life. This energy is obtained by the breakdown of digested food during the process of respiration. The process of releasing energy from food is called respiration.

Most energy comes from the sun, either directly or indirectly: Most life forms on earth get their energy from the sun. Plants use photosynthesis to capture sunlight, and herbivores eat those plants to obtain energy. Carnivores eat the herbivores, and decomposers digest plant and animal matter.

Two ways that living things get their energy is by, Cellular Respiration and Photosynthesis.

Cellular Respiration: Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.

Photosynthesis: it's process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by product.

The main purpose of photosynthesis is to convert radiant energy from the sun into chemical energy that can be used for food. Cellular respiration is the process that occurs in the mitochondria of organisms (animals and plants) to break down sugar in the presence of oxygen to release energy in the form of ATP.

Explanation:

Hope this helps :)

Which is NOT true about genetic disorders? A. Genetic disorders can be treated. B. Genetic disorders are curable. C. Gene therapy is an area study that could eventually fix the disorders. D. Medicines and physical therapies can help the symptoms.​

Answers

If I am correct... B. Genetic Disorders are curable

The statement which is not true about genetic disorders is that genetic disorders are curable.

What are genetic disorders ?

A genetic disorder is a disease that is caused by a change, or mutation, in an individual's DNA sequence.

Many genetic disorders result from gene changes that are present in essentially every cell in the body. As a result, these disorders often affect many body systems, and most cannot be cured. However, approaches may be available to treat or manage some of the associated signs and symptoms.

To know more about genetic disorders here

https://brainly.com/question/11428577

#SPJ2

What does the Earth rotate around? Explain

Answers

the earth rotates around its axis as it revolves around the sun. it takes the earth one year to complete a revolution.

IT'S A 3 QUESTION ASSIGNMENT. WHICH I NEED HELP WITH
As wavelength decreases, what happens to frequency?

Answers

Answer:

the Frequency remains constant

Answer: So if a wave slows down, its wavelength will decrease. ... Although the wave slows down, its frequency remains the same, due to the fact that its wavelength is shorter. When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases.

Explanation:

What effect would an increase in duckweed have on a pond ecosystem ?
A. The duck population would decrease due to a lower food supply

B. The fish population would increase due to an increased food supply

C. The underwater plant population would decrease due to decreased sunlight

d. The algae population would increase due to higher levels of oxygen in the water.

Answers

Answer:

c

Explanation:

Answer:

B.

Explanation:

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