Which does not contribute to
genetic variation?
A. chromosome number
B. crossing
over
C. meiosis
D. random mating

Answers

Answer 1

D Random mating

Cuz everything else leads to the way you are variated


Related Questions

why would scientists may want to know if two plant species are closely related.

Answers

2 related plants may produce similar substances that could be used for medicines

Answer:

- Two related plants may produce similar substances that could be used for medicines. - A related plant may provide a cheaper source of a substance. - If a plant becomes extinct, a related plant may provide an alternative source of a substance.  

(No Explanation)

Which of the following best describes a tissue?

Answers

Answer:

The second one.

Explanation:

I don't really know how to explain it, but not 1 or 3, because it's a group of cells and tissues make up organs, and it's not smaller than a cell.

^^ it's definitely the Second one

Compare the movement of oxygen and carbon dioxide across the cell membrane

Answers

"As oxygen-rich (and carbon dioxide-poor) blood travels by a cell the oxygen diffuses through the cell membrane to the area of lower concentration inside the cell. ... Because the CO2 is of a higher concentration in the cell than in the blood passing by, this gas continually diffuses out of the cell."

4. The human population has experienced unchecked growth for the past 200 years. What does "unchecked" mean? A. Slow b. At a steady rate c. Unrestrained d. Dangerous

Answers

Answer:

B

Explanation:

The correct option would be B

The human population experiencing unchecked growth for the past 200 years does not mean that there were no restraining factors that limit the population. Factors such as death, competition for resources, diseases, etc., were still present.

Despite the limiting factors, the population has been growing. Hence, the correct word to replace 'unchecked growth' would be 'at a steady rate'.

Slow and dangerous really have nothing synonymous with unchecked growth.

The correct option is, therefore, B.

In a predator prey graph, the peak for the predator population always comes after the peak for the prey
population. Why do you think this happens?

Answers

60 predator prey grap populationin the peak.

PLEASE I NEED HELP Question 8 of 10
Membrane proteins called pumps use energy to move hydrogen ions to one
side of the membrane. Which term describes the difference between the
numbers of hydrogen ions on opposite sides of the membrane?
A. lon concentration
B. Concentration gradient
C. Homeostasis
D. Equilibrium

Answers

Answer:

Explanation:

Pumps, also called transporters, are transmembrane proteins that actively move ions and/or solutes against a concentration or electrochemical gradient across biological membranes. Pumps generate a membrane potential by creating an electrochemical gradient across the membrane.

Write the procedure of stone grafting.

Answers

Answer:

Stone/epicotyl grafting is a simple, cheap and quick method of mango propagation with a success rate of 75-80%. For this purpose, stones should be sown in June-July on raised beds of size 1x3 m. the beds should e prepared by mixing soil and FYM in the proportion of 2:1.

Explanation:

Your welcome!

Brainlist Please! :)

Definition of Salt Water
(Impact on Weather)

Answers

The thickness of seawater is an element of saltiness and temperature, Lagerloef clarified. Saltier water is heavier and will sink further in the sea, where it joins flows that course water all throughout the planet. ... Stable salt densities in the seas keep the world's environment in balance, researchers accept.

hope this helps:)

Answer:

Salt weathering or Salt Weather is a form of mechanical or physical weathering of rock. ... The salt derives from an external source (capillary rising ground water, eolian origin, sea water along rocky coasts, atmospheric pollution). Salt weathering is favoured by dry conditions, such as are found in warm and cold (arctic) arid climates.

Explanation:

(meow) <3

#5 help will markbrainliest

Answers

Answer:

after nutrients are absorbed during digestion,the excretory system removes faeces through the rectum. these work together to maintain oxygen homeostasis.

Can someone help me if this is correct

Answers

Answer:

I think B because when you digest you release waste, you absorb nuitreunts from it, and you make proteins for energy.

When an organism gets larger, the characteristic of life shown is

Answers

When an organism gets larger, the characteristic of life shown is becomes complex.

Charlotte and her husband Frederick have genetic testing done. They both have a normal karyotype. The biggest difference between their karyotypes is _____.

Answers

chromosomes because it’s a man and women so the karyotypes will be different cause of their chromosomes or gender

The variable h represents the number of hours spent doing yard work and the variable d represents the amount of money earned how many hours spent doing yard work and the variable d represents the amount of money earned how many hours in all will it take Whitney to earn 15$

Answers

Answer:

[tex]4\frac{1}{11}[/tex] hours

Explanation:

Given

See attachment for graph

First, we determine the equation of the graph.

Pick any two points from the graph

[tex](h_1,d_1) =(18,168)[/tex]

[tex](h_2,d_2) =(36,366)[/tex]

Calculate the slope (m)

[tex]m = \frac{d_2 - d_1}{h_2 -h_1}[/tex]

This gives:

[tex]m = \frac{366 - 168}{36 -18}[/tex]

[tex]m = \frac{198}{18}[/tex]

[tex]m = 11[/tex]

The equation is then calculated as:

[tex]d = m(h - h_1) + d_1[/tex]

This gives:

[tex]d = 11(h - 18) + 168[/tex]

Open bracket

[tex]d = 11h - 198 + 168[/tex]

[tex]d = 11h-30[/tex]

So, the number of hours to earn $15 is:

[tex]d = 11h-30[/tex]

[tex]15 = 11h -30[/tex]

Collect like terms

[tex]11h = 15 + 30[/tex]

[tex]11h = 45[/tex]

Solve for h

[tex]h = \frac{45}{11}[/tex]

[tex]h = 4\frac{1}{11}[/tex]

a botanist scrapes pollen off a flower of one plant and then uses it to pollinate the flower of another plant. what can be scientifically conclude about their offspring

Answers

As a botanist scraped pollen off from a flower of one plant and pollinates the flower of another plant it shows that the botanist helped in the sexual reproduction of plants

i’m so desperate pls help
Which letter in the diagram above represents a complete nucleotide?

Answers

Answer:

F

Explanation:

A nucleotide consists of a base, sugar molecule and phosphate group :)

do you think there is an aesthetic value that could be attached to the hides of the nguni cattle after slaughtering ?​

Answers

Answer:

The correct answer is - yes, these hides are used as aesthetic value.

Explanation:

Nguni hides are the secondary products after slaughtering the Nguni cattle farmed in South Africa. These skins or hides are used to make many aesthetic values and beauty items such as floor rugs. These hides are not only famous for their natural beauty but also due to their incredibly hard-wearing and very easy to clean.

Other than Floor rugs these are also used as furniture in rich houses and lodges. These hides are used to make shoes, leather jackets, car leather, and many more.

How does being hydrophobic affect protein folding?

Answers

Answer:

The hydrophobic effect is considered to be the major driving force for the folding of globular proteins. It results in the burial of the hydrophobic residues in the core of the protein. It is exemplified by the fact that oil and water do not mix and was described well by G. S. Hartley in 1936 .

A biological process is represented in the diagram below. Which of the following concepts does the diagram best illustrate

Answers

Answer:

in sexual reproduction the offering we see the same number of chromosome from each parent

Giving 50 points HURRY!!!

Environmental Science, Lab: Natural Selection
Instructions
Click the links to open the resources below. These resources will help you complete the assignment. Once you have created your file(s) and are ready to upload your assignment, click the Add Files button below and select each file from your desktop or network folder. Upload each file separately.

Your work will not be submitted to your teacher until you click Submit.

Answers

Answer:

okay paste the link we are waiting

How are many unicelled organisms. In addition , anything less than a cell is not alive. What do these statements imply about cells?

Answers

Answer:

The correct answer is - cells are the basic unit of life.

Explanation:

As it is given and also known that there are many unicellular organisms exists and they do not require the multicellular body to live their life or survival. Multicellular organisms are made up of various cells joined together to form a complex organization.

Anything less than a cell can not live or survive and also do not called a living entity. So, from above we can say the basic unit of the life is cell.

please help me i need to pass

Answers

Answer:

Read the question and try understanding it

Explanation:

Which animal adaptation happened before the others?

A. Reproduction on land

B. Lungs

C. Backbone and skull

D. Development of a coelom

Answer: D. development of a coelom ​

Answers

Answer:

D?

Explanation:

Pls fast
cancer drug Vinblastine interferes with the
synthesis of microtubules. Which process does
Vinblastine interfere with during the cell mitosis?

Answers

Answer:

The correct answer is - disrupting microtubule assembly and proper formation of the mitotic spindle and the kinetochore.

Explanation:

Vinblastine is known for treating cancer cells by sending them to apoptosis. It interferes with the synthesis of microtubules. It binds to the microtubular proteins of the mitotic spindle that causes disrupting microtubule assembly.

It also prevents from proper formation of the mitotic spindle and the kinetochore which is essential to separating chromosomes during anaphase. They arrest mitosis and cause cell death.

In the simulation, when protein molecules were evenly distributed on both sides of the membrane, was the solution isotonic, hypertonic, or hypotonic? Which direction was water flowing?

Answers

Answer:

1. Diffusion is the process of a substance moving from an area of high concentration to an area of lower concentration. Osmosis is a type of diffusion where water moves across a semipermeable membrane still from an area of high concentration of water to an area of lower concentration of water. This corresponds to water moving from an area with a low concentration of solute to an area with a higher concentration of solute.

2.

a. A semipermeable membrane allows some substances to pass through it.

b. The plasma membrane of a cell allows small uncharged molecules to pass through it, but not large molecules and not charged ions.

3.

a. The protein molecules were evenly distributed on both sides of the membrane, so this solution was isotonic.

b. In an isotonic solution, water moves both in and out of the cell, which was observed in the simulation.

4.

a. The protein molecules were more highly concentrated on the inside of the cell, so this solution was hypotonic.

b. In hypotonic solutions, water moves into the cell to help dissolve the higher amount of solute inside the cell, which was observed in the simulation.

5.

a. A semipermeable cell membrane is important to allow some molecules, like proteins, to be more highly concentrated inside the cell than outside the cell. If the cell membrane were permeable, the molecules on the inside of the cell would exit the cell and be evenly distributed in the cell and in its environment.

b. If the cell membrane were not permeable at all, the cell would not be able to receive nutrients from its environment.

Explanation:

When protein molecules were evenly distributed on both sides of the membrane, the solution is isotonic.

In isotonic solution the concentration of  solutes on side remain same .There is no net gain or less of water in isotonic solution.

What will be the direction of water flow in isotonic solution?The water will flow freely  across the cell membrane without any change in the concentration of solutes.In isotonic solution the cell neither shrink nor swell because the water concentration will remain same.

To know more about isotonic solution here

https://brainly.com/question/11282407

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Which process starts the formation of soil? O A. Bedrock breaks down into smaller particles. O B. Rock particles clump together in an aggregate. C. Sediment stays and settles in a location. O D. Sediment moves from one place to another place​

Answers

Answer:

it is option A as rock needs to be broken down into sediments before it can become soil

please answer this for me

Answers

Answer:

The answer is a tape worm they are long and flat and can have more than one inside a animal, fish, human, and more

Los nombres de esos esos éteres y aldehidos

Answers

Explanation:

la respuesta está en la imagen de arriba

Which of the following sets of phenotypes describes Mike Wazowski?
Has no fur, eyes on stalks, and green skin.
Has no legs, blue eyes, and green skin.
Has two horns, two legs, and green skin.
Has clawed toes, three eyes, and green skin.
Click Save and Submit to save and submit. Click Save All Answers to save all answers.

Answers

The answer is C because he has all the following characteristics

HELP PLS
Probability in Genetics (Drag each key word to its definition.)

Answers

Answer:

could u plz explane it berifly????

Explanation:

How many amino acids must be obtained in the diet because they cannot be made by the body? A. 2 B.5 C.10 D.20

Answers

Answer: C

Explanation: Just is.

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