What role do chromosomes play in genetic variation?

Answers

Answer 1

Answer:

Each egg and orgasm contains a different combination of genes. This is because when egg and orgasm cells form, the chromosomes join together and randomly exchange genes between each other before the cell divides.


Related Questions

After puberty and before menopause, one egg is released about every______
days from each ovary.

Answers

Answer:

28 days

Explanation:

After puberty and before menopause, one egg is released about every 28 days from each ovary.

Answer:

about every 28 days

Explanation:

Hopefully............ :)

Which type of white blood cell is the numerous?
A. Neutrophils
B. Lymphocytes
C. Eosinophils
D. Monocytes

Answers

The answer to your question, known as “which type of white blood cell is the numerous” Is, A: Neutrophils. Glad to help you.

Each statement below can be described as an observation, fact, or conceptualization. Indicate which of these three possibilities best characterizes each statement and explain your choice

a. All 100 observers agreed the sun rises in the east every day
b. This green apple is sour
c. Planets move from west to east against the background of fixed stars because they are revolving around the sun, just as the Earth does.
d. The United States fought in Vietnam to preserve democracy from communist aggression
e. All green apples are sour.

Answers

Answer:

Explanation:

A fact is something that occurs in the real world. Something that can be verified that is whether correspond to experience.

a. All 100 observers agreed the sun rises----this is a fact

Observation tend to acquire information from a primary source. In living beings, observation make use of the senses, it can be perception and may require data recording via the use of scientific instruments.

This green apple is sour--- this is an observation

Conceptualization involves writing out clearly the key concepts. It involves what comes to the mind after thinking about a subject.

d. The United States fought in Vietnam to preserve democracy from communist aggression --- conceptualization

Dr. Tyler is a clinical psychologist who prescribes drugs such as Valium and Xanax to treat his patients'
anxiety. Dr. Tyler adheres to the perspective in ____ psychology.

neuroscience
cognitive
psychodynamic
social-cultural

Answers

The answer is cognitive psychology.

In dragons, a gene on chromosome 1 codes for wing color and a gene on chromosome 2 codes for body color. Draw out the stages of meiosis for these two chromosomes from a dragon that is heterozygous for both traits. Make sure that, within your drawing, you define your alleles. Also, in your drawing include all the possible allele combinations of the gametes produced.

Answers

Answer:

Possible gametes produced - (XY) (xY) (Xy) (xy)

Explanation:

For Wing color -

Dominant allele = X

Recessive allele = x

For Body color -

Dominant allele = Y

Recessive allele = y

Parent genotype - XxYy

Possible gametes produced - (XY) (xY) (Xy) (xy)

The figure is as follows :

When looking at a stalk of celery that has been sitting in red food colored water. Sarah notices the celery has red lines running through it. Why is this possible? Question 14 options: The roots absorbed the water. The xylem transported the water through the stem and to the leaves of the plant. The phloem transported the water through the stem and to the leaves of the plant The stomata allowed the water in.

Answers

Answer:

It is The Xylem Helping The Food Coloring.

Explanation:

I am taking the quiz right now. Also, I had a glossary with me.

Good Day,

Answer:

The Xylem cheeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeez

20 points
Photosynthesis converts energy from one form to another. Which of
these best describes this energy transformation? *
from kinetic energy to entropy
from light energy to entropy
from chemical energy to kinetic energy
from light energy to chemical energy

Answers

Light to chemical I think because with out light the photosynthesis products ( O2 and Glucose) would not exist.

Answer:

from light energy to chemical energy

Explanation:

10. In the human body, each hormone is regulated by certain genes. These genes are turned
on at times and turned off at other times. Which best explains this process?
F. Genes are regulated by hormones secreted by the endocrine system.
7
G. The regulation of genes is directly controlled by the nervous system.
H. Genes are directly regulated by hormones found in the integumentary system.
J. The regulation of genes is only affected by external factors.

Answers

Answer:

B

Explanation:

It helps

Answer:

Option B The regulation of genes is directly controlled by the nervous system.

Explanation:

The process of turning of and turning on of genes is called Gene Regulation.Gene Regulation is an important process as it controls various mechanisms of human bodily functions through Gene Expression by turning of and on the genes at required times which in turn breaks and synthesizes necessary proteins for regulation of different functions.Since, the nervous system is responsible for regulating gene expression, therefore, gene regulation is also controlled by the nervous system.

For more information:

https://brainly.com/question/7196655

What are the 4 nitrogenous bases found in DNA and what are their appropriate pairings?

Answers

Answer:

DNA has four nucleobases: adenine, thymine, guanine, and cytosine. The nucleobases in a DNA strand have preferred partners to form hydrogen bonds with. Cytosine pairs with guanine, and adenine pairs with thymine. These are the base pairing rules that allow DNA replication and protein synthesis to happen.

Explanation:

hope this helps <3

Which correctly describes cytokinesis and the phase it occurs in the cell cycle?

A. It is the process in which DNA is replicated to make two copies, and it occurs in the interphase of the
cell cycle.

B. It is the process in which DNA is replicated to make two copies, and it occurs in the mitotic phase of
the cell cycle.

c. It is the process in which the cytoplasm of a cell divides to make two daughter cells, and it occurs in
the interphase of the cell cycle.

D. It is the process in which the cytoplasm of a cell divides to make two daughter cells, and it occurs in
the mitotic phase of the cell cycle.

Answers

Answer:

D

Explanation:

Cytokinesis occurs after telophase in the cycle. During cytokinesis a contractile ring forms around the cell membrane splitting the cell into two separate cells which each contain a full set of DNA

what are the 3 factors that make up the seasons?

Answers

Answer:

However, other factors influence the seasons as well.

Earth's Axis. Earth sits at a tilt of 22.5 degrees, also known as an axis. ...

Sunlight. Sunlight influences the seasons, particularly the sun's position and Earth's surface that reflects the light. ...

Elevation. ...

Wind Patterns. ...

Global Warming.

Explanation:

Answer:

Factor that affects the season is-

1) Global warming:- Climate change influences the seasons. The clearing of forests and the burning of fossil fuels have led to warming of the environment that is affecting the balance of the seasons.

2) Sunlight:- It influences the seasons i.e with a change in the sun's position and earth's surface that reflects the light.

3) Elevation:- It also influences the seasons. It is due to this factor that some areas may remain cold, even during the summer months.

Most ecosystems on Earth rely on _________________ as their source of energy. A.Chemical Energy
B.the Sun
C.Hydrothermal Energy
be more faster i'm in a test

Answers

Answer:

B

Explanation:


Oogenesis (a) produces diploid cells
(b) requires meiotic cell divisions
(c) produces four egg cells (d) produces
one diploid cell and three polar bodies


Can u help me only choose the correct answer pls

Answers

Answer:

Oogenesis requires meiotic cell divisions

hence correct answer is b)

Select all that are examples of Relative Dating:

(Please answer ASAP)

Answers

Answer:

a,b,d

Explanation:

what helps control heart rate and also conveys information between the spinal cord and other parts of the brain

Answers

Answer:

The cerebellum controls motor reflexes and is, therefore, involved in balance and muscle coordination. The brainstem connects and transmits signals from the brain to the spinal cord, controlling functions such as breathing, heart rate, and alertness.

Explanation:

hope this helps <3

Artificial eutrophication is caused by

Answers

Answer:

Fertilizer from farms, lawns, and gardens is the largest source of nutrients that cause artificial eutrophication. Phosphates in some laundry and dish-washing detergents are another major cause of eutrophication . Phosphorus is a plant nutrient that can cause the excessive growth of algae

Explanation:

Flatworms are a diverse group living in freshwater and marine habitats. Protonephridia are found in some species of flatworms. This organ is a series of tubes and pumps to get rid of excess water that enters the worm passively from the environment. Which group of flatworms (freshwater or marine) does your group think have the protonephridia system

Answers

Answer:

Freshwater

Explanation:

Protonephridia are made up of many flame cells. Flame cells are specialized excretory cell found in the simplest freshwater invertebrates like flatworms.

100 POINTS!!!!

Reference the article on the first page to answer these questions:
https://www.pharmaceuticalonline.com/doc/the-potential-of-personalized-medicine-0001

1. Summarize the following points of the article. (2 points)


a) What is personalized medicine?














b) What areas of human health are likely to benefit from these new technologies?













2. How did the sequencing of the human genome change the way doctors are analyzing personal disease and risk? List the five points made in the article. (5 points)













3. What are the concerns of Dr. Ray Woosley regarding these new developments? (2 points)













4. You might be able to have your entire genome sequenced by a commercial company for less than $5,000 in the near future. Make a list of the potential benefits and concerns of genome sequencing. (3 points)













5. What are the five challenges to personalized medicine that are discussed in the article? ( 5 points)













6. Much of the research being done in this area is based on commercial products. The scientists performing the experiments are often employees of the company. Companies that are developing these new technologies hope to create products to be sold for profit. How does the involvement of commercial pharmaceutical companies influence the use of this and other new technology? (2 points)













7. The article states, “The number one concern that individuals have today is that information about past health or prediction of future health based on genetic tests may be used by a health insurance company to increase rates or deny healthcare coverage. Also, people are concerned that employers might use genetic information to make decisions about hiring, firing, and job assignments.”


a) Using at least two of the advantages or disadvantages discussed in the article, state your opinion about the use of the information contained in a person’s genome to treat disease. (4 points)













b) Do you think this new technology should be controlled or regulated? How would you address the potential for loss of genetic privacy? (2 points)

Answers

Answer:

1

A) A medicine that is personalized towards an individual's DNA.

B) These new technologies will be a benefit towards human health because they will be more effective and will not be as hazardous.

2) The sequencing of the human genome changed the way doctors are analyzing personal disease and risk because they are now able to diagnose the disease risk factors, provide better treatment for patients, determine which type of disease it is more accurately, how much of a dose of medicine the patient needs, and figure out genetic disorders.

3) He is worried that people might be moving too fast regarding these developments and wants them to proceed slowly and carefully so there is no room for error.

4) Some benefits would be protection from other certain diseases, I can fix any sort of genetic disorder, and order it so I can become stronger. However, I’m concerned that there will be risks in the sequencing process, which will change my genome for the worse.

5) Many potential biomarkers have yet to be verified and qualified for use, the FDA has yet to set a regulatory approval pathway for these products, the success of personalized medicine is contingent the ability of scientists and healthcare providers to capture, manage, store, and provide access to data and medical information, in order for personalized medicine to succeed, healthcare providers, patients, and insurers must learn how it works, and there are many privacy, confidentiality and fair-use concerns.

6 It could influence the use of these technologies because rather than focusing on helping people, they will only think about the money, leading them to do it carelessly and recklessly.

7

A) I think that using the information in a person's genome to treat disease is a good idea because it is much more effective in preventing disease and can fix any sort of genetic disorder much more easily.

B) I think this should be controlled. To address the potential for loss of genetic privacy, make it so that person gives their consent and you only take what is needed without having to look at the whole genome.

Explanation:

Hope this helps

True or false. Since there aren’t enough resources to support all the offspring, individuals have to complete.

Answers

Answer:

True.

Explanation:

If the offspring does not have enough resources they will have to compete for survival.

They will have to compete for the resources.

Hope this is correct, have a great day.

How does the lac operon help E. coli conserve energy and other resources?

Answers

Answer:

A lac operon is a group of three genes that are always transcribed together which code proteins needed for the metabolism of lactose. ... This way of transcription control preserves the energy of E. coli, so proteins that these bacteria need in presence of lactose aren't synthesized when this molecule is absent.

can birds urinates?​

Answers

yes they can urinate :)

Answer:

Yes they can urinate

Explanation:

They have a small hole where they can urinate out of

why cell is considered as the functional unit of life ?give one reason​

Answers

Answer:

it is a cingle organism and it lives because it is basically a germ i think

Explanation:

Answer:

I'll give 2 for you to choose from

Explanation:

1. All living things have a cell, whether it prokaryote, a eukaryote.

2. Even though are millions of cells in your body, each one plays big a role in making it function. Whether its your immune system cells or your genetic cells, without them, you literally cant live.

I need help please in ASAP

Answers

Answer:

it is either c or d

Explanation:

have a nice day!


7th grade helpppppppppp

Answers

Answer:

relax kalang punta ka rito sa lugar nato

Explanation:

✌️✌️✌️

In which layer of the atmosphere is most of the ultraviolet light blocked?
O A. Thermosphere
O B. Stratosphere
O C. Troposphere
O D. Mesosphere

Answers

Answer:

C. Troposphere

Explanation:

It works a lot like sunscreen, blocking out harmful ultraviolet (UV) rays from the sun. ... Most ozone is found below a 30 mile (48 km) height. ... And considering without an atmosphere we'd all die, it's kind of important to ... From the Earth's surface through the bottom layer of atmosphere, called the troposphere, temperature .

C the troposphere !!!

A student has a bag of Takis. They accidentally rip a hole in the bag and
the takis begin to fall onto the floor. As the takis fall they are losing
potential energy and gaining what type of energy?

Answers

Answer:

kinetic energy

Explanation:

Potential energy is the energy of an object while it is not moving, kinetic energy is an energy of an object while it is moving.

When an object is losing potential energy, it slowly starts moving.

when an object loses kinetic energy it slowly starts stopping.

So in a nutshell, the Takis are falling and losing their potential energy, while gaining kinetic energy.

which of the following is a role of helper t cells
A( To ingest pathogens
B( to destroy cells that have been infected by viruses
C( to activate B Cells
D( to increase blood flow

Answers

A to ingest pathogens
The answer to this question is C( to activate B cells

According to the _______ hypothesis, the moon formed far away from the earth and was later captured by the earth's gravity.
The most popular hypothesis for the moon's origin is the _______.
Telescopes can be engineered to gather light from any portion of the _______.
In 2021 the James Webb Telescope will begin operation focusing on infrared wavelengths and must be kept extremely _______.
Scientists estimated the age of the universe to be nearly _______ billion years using Hubble's pictures and images from the Wilkinson probe.

Answers

Answer:

The correct answer is -

1. capture

2. the giant impact hypothesis

3. electromagnetic spectrum

4. cold

5. 14

Explanation:

Capture hypothesis is presented by the Urey and was dominant up to the 60s which states that the Moon was an asteroid-like wandering structure that formed somewhere far in the solar system and was captured by Earth's gravity while it was wandering.

The most dominant and popular theory for the origin of the moon is the giant impact hypothesis says that it is formed from the debris left after the collision of the earth and Theia a Mars-sized body.

Telescopes are tools engineered for collecting light from any part of the electromagnetic spectrum.

Scientists estimated that the age of the whole universe to be nearly 14 billion years with the help of Hubble's pictures and pictures from the Probe of Wilkinson

1. capture

2. giant impact hypothesis

3. electromagnetic spectrum

4. cold

5. 14

6. The moon's mass is much lower than the earth's; therefore, its gravity isn't strong enough to hold an atmosphere. This lack of an atmosphere and the moon's small size allowed it to become cool enough to the point at which it completely solidified. Thus, the moon doesn't have any plate tectonic activity.

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[tex]2xy^{2} -3xy-7\\x= -4 \\y=5[/tex] Describe the conditions of the US army when war was declared. Who was its leader? How did it grow?The US Declares War Which best describes the figure that is represented by the following coordinates?A(-3, 4), B(3, 4), C(3,-2) and D(-3,-2) 4a trapezoid10-8a square64a rectangle108-6-42810%-20-2-a parallelogram- 10- How did hunger strikes by enslaved Africans affect slaveholders during the Middle Passage? Which modern democratic principle was influenced by the roman legal code that held all citizens responsible for their actions helpppppp someone please A diagram is provided.What is the volume of the block of metal? Which line segment is a diameter of circle F?BAFEACEC What does-2 indicate about the position of -and -2 on the number line? (1 point)>- is located on the right of-2O-is located on the left of -2O - s located on the right of 0 and -2 Is located on the left of 0is located on the left of0 and -2 is located on the right of 0 if a triangle has a area of 42 cm^2 and a base of 8 cm, what is the height?show work plsssss The perimeter of a certain hexagon is 14.7 centimeters. Five of the sides have the samelength of n centimeters, while the one side has a length of 1.9 centimeters, as shownbelow. What are the constants in the expression 7r - 3 + 2s + 5A 7, 3, 2, and 5B -3 and 5C 7 and 2D 7, 2, and 5 A _____ is a currency whose value is determined by the supply and demand for the currency in the market. The Articles of Confederation was the first attempt at establishing a national government after the signing of the Declaration of Independence. It served the nation from 1777-1787.The Second Continental Congress signed the Declaration of Independence in July 1776. The Articles were first proposed by a committee of the Second Congress, a committee headed by John Dickinson, on July 12, 1776.The Third Continental Congress got underway on December 20, 1776. This Congress coordinated the war, and modified and finalized the Articles of Confederation. On November 15, 1777, the Articles were proposed to the colonies Originally, the Articles called for a strong central government, a feature missing from the final Articles. The Articles formally changed the designation of the colonies to States.Because of the war and disagreements between the colonies, it took three and a half years to get final ratification of the Articles because they had to be ratified by every state. Final ratification came on March 1, 1781. The War ended two years later, in April 1783.The Articles created a confederation, called the United States of America. In a confederation, the individual political units, States in this case, maintain their sovereignty (in other words, each is its own nation), but they join together in a coordinated way to deal with certain issues, such as fighting the war.Questions:What is a confederation?What was the purpose of the Articles of Confederation?Who had power in the Articles of Confederation, the states or federal government?Why was the term colonies changed?Did the Articles of Confederation make us a "United States"? Find the sum of (9c+8)+(5x-2)+(3y+7) Which conclusion was a direct result of the gold foil experiment? Please help ASAP! My parents are gonna kill me if I dont pass this Conservation of energy is explained as a scientific law and not a _______ because it does not explain why energy is conserved could somebody help me please Find the measure of angle x.A.33B.40C.45D.57