There are four mechanisms that can cause changes in the frequencies of genes in populations: mutation, migration, genetic drift, and natural selection. All four are mechanisms of evolutionary change. What is genetic drift? A) In a population, it is the changes in allelic frequencies of a gene that are due to chance. B) A random error/change in the DNA sequence. These may be inherited or occur in cells during the lifetime of the organism. C) Also known as gene flow. It is any movement of individuals and/or the genetic material they carry, from one population to another. D) There is variation in any population; differential reproduction occurs and over time a more

Answers

Answer 1

Answer:

There is variation in any population; differential reproduction occurs and over time a more

Explanation:


Related Questions

What is a reasoning statement?

Answers

Answer: A reasoning is a form of logical thinking that uses related observations to create a general conclusion.

Explanation:

A life scientist such as a biologist first makes observations and records them.

What would happen if no one obeyed
stop signs, traffic lights and speed
limits? Chaos! And, no doubt, someone
would get hurt. Luckily there are
"Rules of the road” in place to keep
drivers safe. Now think about how we
can keep ourselves and others safe
from labels, prejudice and stereotypes.
Come up with your own "Rules of
Respect" that will keep you and others
safe from the harm that labels,
prejudice and stereotypes can do.

Answers

Answer:

1.  Never judge someone by appearance, particularly color or outfit/tattoos

2. Always treat someone with respect as if they are your friend

3. Never presume someone's financial conditions based off of their lifestyle

With these rules, we could theoretically be one step closer to equality.

Explanation:

species of bacteria can evolve more quickly than species of mammals because bacteria have--

Answers

higher rates of reproduction

Answer:

higher rates of reproduction

and no back bones

Explanation:

How does the human body maintains homeostasis? PLZ help I have a Test this week.

Answers

Answer:

Here are just three of the many ways that human organ systems help the body maintain homeostasis: Respiratory system: A high concentration of carbon dioxide in the blood triggers faster breathing. ... Excretory system: A low level of water in the blood triggers retention of water by the kidneys.

Jackson says, “The really scary things though are the physical, chemical, oceanographic things that are happening.” What does he mean by this?

Answers

I think it is water pollution, fossil fuels, air pollution, carbon dioxide and acid that are damaging our world

Oceanography includes the oceans and sea depicting and analysis or change in the characteristics of water bodies.

By the statement, scary things are happening to the oceans by Jackson means that:

The oceans and aquatic lives are suffering from climatic changes and is undergoing immense physical and chemical changes.

The addition of unwanted wastes, dumps and chemical spills in oceanic bodies are altering the chemical and physical attributes of the water. The habitants of water like fauna and flora are suffering a lot of loss due to changes.

The involvement of human activities has increased water pollution and many other kinds of pollution. Overfishing, oil spills and dumping of waste in water bodies have altered the natural characteristics of water.

To learn more about pollution follow the link:

https://brainly.com/question/7509394

what is the goal of seed dispersal? 10 points
A. to help plants grow more quickly
B. to have new plants that grow far away from parent plants so that they dont compete for resources
C. to spread different species of plants to different parts of the world
D. to spread seed evenly to a given area

Answers

Answer:

B. to have new plants that grow far away from parent plants so that they dont compete for resources

Explanation:

Which of the following are true about cancer? Check all that apply.

Cancer cells display contact inhibition.

Cancer is contagious.

Cancer cells divide uncontrollably.

Cancer can spread around the body.

Cancer comes in many forms.

Cancer affects only the elderly.

Cancer cells invade healthy tissue.

Cancer does not obey contact inhibition.

Answers

Answer: I think these are the answers:

- Cancer can spread around the body.

- Cancer cells invade healthy tissue.

- Cancer cells display contact inhibition.

- Cancer comes in many forms.

- Cancer cells divide uncontrollably.

and I think "Cancer does not obey contact inhibition." is one too... I hope this helps! :D

Explanation:

Cancer cells:

• Divide uncontrollably

• Comes in many forms

Invade healthy tissues

• Does not obey contact inhibition

What is cancer?

Cancer is a diseased condition in which uncontrolled cell division takes place.

Cancer are of two main types: benign and malignant.

Benign tumours are localized to a particular organ and thus can be removed through chemotherapy or surgery.

Malignant tumours spread to body parts through blood stream and attack the healthy cells. This property of metastasis is unique to cancer cells.

Normal cells show their contact with the adjacent cells. In cancer, contact inhibition is lost and so they divide in an uncontrolled manner.

Breast cancer, leukaemia, lung cancer etc are some of the examples of cancer.

Cancer is detected through tissue biopsy. X-Rays, CT-Scan, MRI are some other techniques that detect cancer in the body.

Cancer can be treated if diagnosed early. Radiotherapy, chemotherapy and surgical intervention are the part of cancer treatment.

Therefore, cancer is considered a serious medical complication.

Learn more about cancer, here:

https://brainly.com/question/14945792

#SPJ2

Which timeline shows the correct order of contributions made to the discovery of DNA?
(Options are in screenshots below!)

Answers

Answer:

The correct answer is B.

Explanation:

DNA was discovered in 1800, and then scientists studied DNA with X-Rays. After a while, scientists published a 3D model of DNA, and shortly after, scientists decoded DNA genes. So the answer is Option B.

Hopefully, this helps! :D

Ask your question below!

In the 1800s first the discovery of DNA was done, than the X-ray study of the DNA was done, after that the 3-D model of the DNA was developed, and finally human genetic code was decoded in the 1960s.  

• The DNA was initially identified in the late 1860s by Friedrich Meischer, a Swiss chemist.  

• After that Rosalind Franklin and Wilkins studied DNA with the help of X-ray diffraction tool.  

• In the 1953s, the 3D model of the DNA molecule was discovered by Watson and Crick.  

• Finally in the 1960s, Nirenberg and his colleagues at the National Institutes of Health deciphered the human genetic code.  

Thus, the second timeline shows the correct order of contributions made to the discovery of DNA.  

To know more about:

https://brainly.com/question/14219476

PLEASE ANYONE I NEED HELP!!!!

what is the net ionic equation and what are the spectator ions of Bel2(aq) + PbSO4(aq) = BeSO4(aq) + Pbl2(s)

Answers

Explanation Worked out

What is different about normal cell division and cancer cell division?

Answers

Answer/Explanation:

Normal cell division is a very controlled process.

There are several checkpoints where the cell ensures the cell is:

receiving the correct signals to dividethat the environmental conditions are favourable for the cell to dividethat there is no damage to the DNA.

However, cancerous cells proliferate uncontrollably. This is because they can bypass the checkpoints and divide without the necessary signals. This means cell division keeps occurring even when conditions are unfavourable and the DNA is damaged.

Who knows how to do this?

Answers

Answer:

respritory and immune

Explanation:

took the test

Answer:  6. the first one ,the third one ,

Explanation:

7.immune or respitory since her breathing is fast

Need help with this

Answers

Answer:

her arms are puffy , red and swollen

Explanation:

that is literally a sign :/

Which of the following research questions would not be tested using inferential statistics?

A.
Do more males than females consider sports to be an important part of high school?
B.
How many individuals in the state of Texas earn over $35,000 a year?
C.
Are intelligence and creativity related?
D.
Does the amount of time an individual spends watching television influence fatigue level?

Answers

Answer:

B.

How many individuals in the state of Texas earn over $35,000 a year?

Explanation:

The correct option is (B) How many individuals in the state of Texas earn over $35,000 a year?

What is inferential statistics?

Inferential statistics is a branch of statistics that makes the use of various analytical tools to draw inferences about the population data from sample data.

Inferential statistics is based on the concept of random sampling from a group of population and on the basis of these random samples inferences  or conclusion are drawn.

Such kind of studies are important when taking inputs from each and every member of the population is not possible.

Thus, all the given research questions can be tested using inferential statistics but in case of option (B) the information from each and every person is required to draw the inference.

Learn more about inferential statistics, here;

https://brainly.com/question/6698743

#SPJ6

What are some reasons many people do not have enough to eat?

Answers

Answer:

Drought reducing the amount of food available, Population size, Not enough money.

Explanation:

hope this helps :3

if it did pls mark brainliest

Cardiac muscles

have light and dark stripes

control the heart

are striated

are voluntary

Answers

Answer:cardiac muscles are striated

Explanation:

Answer:

cardiac muscles are striated

Explanation:

yw

How does niche affect organisms populations in an ecosystem

Answers

Answer:

Without the ecological niches, there would be less biodiversity, and the ecosystem would not be in balance.

Explanation:

A species' ecological niche can be defined as the range of resources and conditions allowing the species to maintain a viable population a more simple definition is if two species have the same niche, one species will exclude the other.

if an organism has a diploid number of 12, how many possible combinations of chromosomes could exist in its gametes with no crossing over?

a.) 8
b.)16
c.)32
d.)64

Answers

Answer: D

Explanation:

Chromosomes are the inherited unit of the organism which transfers the parental gene to the offspring.

The diploid is the paired chromosome quantity present in the cell that originates from each parent.

The correct answer is:

Option D. 64

This can be explained as:

The diploid (2n) number of chromosomes = 12

Haploid (n) number of chromosome = 6

The possible number of chromosome pairs is given by 2ⁿ. Where n = a haploid number of chromosomes.

So, the possible combinations of chromosomes that could be found in the gametes with no crossing over will be:

= 2⁶

= 64

Therefore, 64 possible combinations of chromosomes can be present.

To learn more about diploid and haploid chromosomes follow the link:

https://brainly.com/question/19876353

What is a habitat?
A) an area of land
B) a community
C) a niche
D) a population

Answers

Answer:

the answer is a niche

Explanation:

Whats The Point Of Life?

Answers

Answer:

to enjoy it to the fullest because God put us here for a purpose

Explanation:

Answer:

this feels like philosophy not biology lol.

Explanation:

It is the moment when a mind latches onto an idea or purpose that an individual finds meaning in their life. This means that it doesn't matter who or where you are or whatever activity you might be doing – if your mind believes it has discovered the meaning of life, then that is the meaning of life for you

What is the jellylike interior of the cell called?
A: mitochondria
B: cell wall
C: cytoplasm

Answers

I believe It is C, cytoplasm

Answer:

The answer is A

Explanation:

Which statement BEST explains why few plants grow on a tropical rain forest floor?
A.pollution
B.climate change
C.habitat destruction
D.tectonic plate motion

Answers

Answer:

c            

is correct!

what makes the red blood cell special, why is it special, how is it different than other cells, what is its primary function. (Minimum 5 sentences)....Please help

Answers

Answer:

not sure If I can make 5 sentences but I can help by telling you that it delivers oxygen and energy throughout the body through the bloodstream which is a given but there ya go

define hypogeal germination and Epigeal germination​

Answers

Explanation:

Hypogeal germination is when the plant is germinated under the ground. An example of this would be the pea plant.

epigeal germination is the opposite of that. Germination takes place above the ground. normal bean plants have epigeal germination

A city wants to reduce groundwater overuse. Which of the following suggestions should the city council make to the community?
A)Create educational fliers about how to properly dispose of toxic cleaning products.
B)Look into drilling personal wells on their own property.
C)Increase the number of public trash cans to avoid littering.
D)Reduce the frequency of lawn watering during rainy seasons.

Answers

Reducing the frequency of lawn watering during rainy seasons will help

reduce groundwater overuse.

Groundwater is found deep below the soil as a result of them seeping into

the ground during rainfall. Some of them are emptied into water bodies such

as seas, oceans etc. Water pumping machines forces the water out for

by individuals.

The use of the groundwater will however be reduced by a reduction in the

frequency of lawn watering during rainy seasons.

Read more on https://brainly.com/question/12225860

4. Using evidence from the text, describe the purpose of the cell membrane.

Answers

Answer:

it protects the cell from germs and stuff

Moonlight is really ____________ being reflected

Answers

Answer:

Sunlight being reflected

1. What does photosynthesis do for the plant?
2. What does cellular respiration do for the plant? ​

Answers

Answer:

Explanation:

1.Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.

2.The process of cellular respiration allows plants to break down glucose into ATP. The ATP provides the energy they need to carry out various functions. Although plants use photosynthesis to produce glucose, they use cellular respiration to release energy from the glucose

1. View the cartoon image at right. You’ve been volunteering in a kindergarten classroom, and one of the children asks about the biological levels of organization that you are studying (in random order): tissues, cells, organ systems, organs. From smallest to largest, explain these levels as they relate to the cartoon image below. Remember, it is unlikely the children in this kindergarten class have taken an advanced science course yet so keep this in mind when making your explanation.

Answers

Answer:

May you please include the image, so I can help you?

Explanation:

I need visuals.

testing ur knowledge on cats: when cats wag their tales what does that mean
A. They are hungry
B. They are happy
C. They are annoyed
D. They are thirsty

Answers

Answer:

When cats wag their tales it means that they are most likely annoyed.

Examine the sentence that Eunice wrote to describe the male reproductive parts of a flower.

The filament is the main structure, which is made up of the stamen with the anther on top.

Which statement best describes Eunice’s sentence?

It correctly describes the male reproductive parts.
Eunice switched the stamen and the anther.
Eunice switched the filament and the stamen.
It correctly describes the female reproductive parts.

Answers

Answer:

i think its c

Answer: It should be C, Eunice switched the filament and the stamen

Explanation:

that is what i think it is, please comment if right or wrong?

Other Questions
A large container for water weighs 21 pounds. If a gallon of water weighs 8.34 pounds, what is an equation that relates the weight of thewater and the container, W. in pounds and the amount of water, A, in gallons? (1 point)W Two identical spring scales are arranged as shown. If a weight is suspended as shown in the figure, what will happen?A.Spring on the left will stretch more.B.Spring on the right will stretch more.C.Both springs will stretch the same distance.D.One cannot tell which spring will stretch more. 4 x _ = 10also help me with this plz answer it don't say look it up or use hint In 1526, Spain made Cortes viceroyalty or viceroy of Nueva Espana. This put all lands directly under the __________. * Which questions would be most useful to help a reader figure out the theme of story? a measuring cylinder contains 30cm3 of a liquid some more of the liquid is added until the liquid level reaches the 50cm3 mark the reading on the balance increases by 30g what is the density of liquid? The graph shows the relationship between time and the number of soda bottles a machine can make. Use the points (,) and (,) to find the number of soda bottles the machine can make each minute. Number of Soda Bottles Made 0 2 4 6 8 10 0 100 200 300 400 500 Time (minutes) Number of Soda Bottles A coordinate plane titled Number of Soda Bottles Made is shown. A horizontal axis is labeled Time (minutes) from 0 to 10. A vertical axis is labeled Number of Soda Bottles from 0 to 500. A line rises from left to right starting at the origin, (0, 0), and passes through plotted points (4, 200) and (8, 400). The machine can make nothing soda bottles each minute. Which function describes this graph ? all the facts and observations gathered in an experiment are called A.conclusions B.Data C.theories D.hyposthesis what is the substance of air Was James Madison right; Political parties are dangerous and destructive to the American political system. agree or disagree with this statement and why Most solid solutes will dissolve ___ at ___ temperaturesA. slower, higherB. faster, higherC. faster, lower What was the primary debate in the Scopes trial?the role of religion in societythe value of the scientific methodO the powers of the state governmentthe validity of the theory of evolution can someone help answer this?? What were Texas settlers looking for when they left the us and were looking to settle in Mexican Texas? What is the percent change of 500 to 100 what is the state of y when y = k/x, x is halved. pls help me tbis is being timed HURRRRY!!!! Thank you How did King Philips War end, and what were the the two main effects of this war?