why do polygenic traits show bell curves in variation

Answers

Answer 1

Answer: because there are multiple genes that play a role in the phenotype, and each gene could have multiple alleles. This can give a range of possible phenotypes from all the variation that's coming into play here.


Related Questions

what is the role of vegetation in slope stability?

Answers

Vegetation helps stabilize steep forested slopes chiefly by reinforcing the soil through tree roots and by changing the soil water regime.

When is the kinetic energy of a pendulum the least?

Question 5 options:

On the path beginning the upwards swing.


Half the distance on the path traveling back down.


At the bottom of the swing.


At the top of the swing where it briefly stops before changing direction.

Answers

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The Correct choice is ~

" At the top of the swing where it briefly stops before changing direction "

before changing the direction, it stops for a while therefore the kinetics energy is almost zero at that particular moment ~

The answer is D - At the top of the swing where it briefly stops before changing direction. This is where potential energy is at its highest, meaning that kinetic energy is at its lowest. When the pendulum is beginning its upwards swing, it has a lot of kinetic energy. When it is half the distance traveling down it also has lots kinetic energy. When it is at the bottom it as well has a lot of kinetic energy. The only time where the kinetic energy is least is when the pendulum stops to change direction. Any form of stopping forced the object to loose its kinetic energy.

I hope this helps! :)

which division of the ans is associated with the fight-or-flight response?

Answers

It is in the Sympathetic Division

What percentage of body weight must be lost due to dehydration before delirium, exhaustion, and collapse occur

Answers

Answer:

7-10 percent of body weight must be lost due to dehydration before delirium, exhaustion, and collapse occur.

Explanation:

Hope this helps!

Which of the following structures of the respiratory system helps to prevent choking?

Answers

Answer:

b. is correct Epiglottis

Explanation: post protected

After you finish a big meal, the level of glucose in your bloodstream increases. What happens next in order for your body to process the glucose

Answers

Answer:

Digestion

Explanation:

The body digest the food down through the mouth to the anus

some enzymes also act on the food for easy digestion

the age of fossils can sometimes be determined by radiometric dating, which is based on the constant rate of decay of radioactive isotopes. the time required for half of a radioactive isotope to decay is called the half-life of that isotope. for example, the isotope carbon-14 has a half-life of 5,730 years.

Answers

Answer:

17,190 years Radiometric dating is a technique for determining the age of fossils that is based on the fact that specific radioactive isotopes decay at a constant rate.

Explanation:

How to treat Scalp acne?

Answers

Answer:

1. Treat acne on the head with benzoyl peroxide

2. Use salicylic acid to clear pores

3. Use AHA to treat acne on the head

4. Cleanse the scalp with sulfur

5. Use a retinoid to apply to acne spots

Explanation:

Walking through a forest you
encounter fallen leaves, dead
organisms, a rotting stump. All of
these can be described as
A. autotrophs.
B. primary consumers.
C. trophic levels.
D. detritus.

Answers

Answer:

D

Explanation:

D is really decomposing waste of anytime so I think that’s the answer.

In a forest fallen leaves, dead organisms, a rotting stump. All of these can be described as detritus, hence option D is correct.

What are detritus in the ecosystem?

Detritus is a term used in ecology to describe organic stuff that comes from nearby terrestrial populations and falls onto the soil or into bodies of water, including leaves and other plant parts, animal remains, waste products, and other organic trash.

Detritivorous invertebrates, which are prominent elements of almost all ecosystems, eat detritus, which is a significant pool of carbon in the global carbon cycle.

Therefore, detritus food chains, in contrast to terrestrial food chains, begin with dead organic materials rather than producers or autotrophs, hence option D is correct.

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If there is oxygen around, how will muscle cells make ATP?

Answers

Answer:

Muscle cells can continue to produce ATP when oxygen runs low using lactic acid fermentation. ... Many yeast use alcoholic fermentation to produce ethanol

Patient describes a burning sensation on the posterior side of her body, lateral to the spine on the left side of the body inferior to the shoulder blade, inferior to the waist and superior to the knee. Where is this located on the image above?


A


B


C


D


E


F


G


H


I


J

Answers

Answer:

Explanation:

Injuries to the upper brachial plexus (C5, C6) affect muscles of the shoulder and elbow.

Scientists often use fruit flies as a method to test hypotheses about human genes. Why are fruit flies advantageous in the study of human inheritance?
They can self-pollinate.
They lack nucleic acids.
They are very different from humans.
They reproduce quickly and take up little space.

Answers

Fruitflies are advantageous in the study of human genes and inheritance because they reproduce quickly and take up little space.

Advantages of using Fruitflies in the study of human genetics

Fruitflies are usually a subject for the study of human genes and inheritance for some reasons:

They have a simple genetic structureThey reproduce quicklyThey are quite small and hence take up very little space

The quick rate of reproduction makes fruitflies good subjects for studying mutation as well.

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They reproduce quickly and take up little space.

What is inheritance?

Fruit flies (Drosophila melanogaster) are advantageous in the study of human inheritance because they have several characteristics that make them well-suited for genetic research. One key advantage is their rapid reproductive cycle, with a generation time of about two weeks. This allows researchers to observe multiple generations in a short period, accelerating the study of inheritance patterns and genetic traits.

Additionally, fruit flies have a relatively small size, making it feasible to maintain large populations in a laboratory setting without requiring excessive space or resources. This allows for efficient experimental design and the ability to conduct large-scale genetic studies.

While fruit flies share some genetic similarities with humans, they are not identical to humans. However, their genetic and developmental processes have enough similarities to provide valuable insights into fundamental principles of inheritance and gene function, which can inform our understanding of human genetics.

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explain why you have so many responses to one stimulus

Answers

Answer:

When a stimulus is detected by a sensory receptor, it can elicit a reflex via stimulus transduction.

What happens to the genetic material before the cell divides

Answers

Because each chromosome is made from a single molecule of 'DNA', before a cell divides itself, it had to replicate and copy its DNA. This makes it so that after cell division, each new cell holds an exact copy of the genetic material from the original cell.

I hope this helps! :)

Which of the following are water problems? Select the three correct answers.

droughts


condensation


pollution


conversation


runoff

floods

Answers

Answer:

floods are the water problem

Floods is a problem

a can of pop has a mass of 0.30 kg. what is the weight of that can on earth

Answers

Answer:

the same but I would need to see the answer

2. What is a gene? ________________________________________________________
3. What is the difference between gametes and body cells? ____________________________________________________________________________
4. Each person’s DNA is unique except for who?________________________________________________________________________
5. How does each gene code for a protein?__________________________________________________________________________________________________________________________________________________
6. Look at the picture of the nucleus, chromosome, and gene and infer what the relationship is of the three things? ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Please answer all questions

Answers

Answer:

1. generation or birth or gender) is a basic unit of heredity and a sequence of nucleotides in DNA that encodes the synthesis of a gene product, either RNA or protein.

2: 1. Body cells make up the body of any multicellular organism. On the other hand, a gamete is a sex cell that can either be a sperm or egg cell.

2. Body cells undergo the process of mitosis while gametes undergo a process called meiosis.

3. A body cell contains a complete number of chromosomes and is called a diploid cell while a gamete contains only half the number of chromosomes of its parent cell, and it is called a haploid cell.

3. Identical twins

4. nucleotide triplets

5. A gene is a sequence of nucleotide bases that specifies certain products; RNA or proteins. It is the segment of DNA that holds the information to build and maintain an organism's cell and also pass genetic traits to offspring. Hence, it is the molecular unit of heredity in living organisms.

The DNA is a long double-helical structure that stores the genetic information in our cells. It consists of two long polynucleotide chains composed of the four nucleotides subunits (A, C, G, T).

In order for the long strand of DNA to fit into the cell's nucleus, it is coiled around certain proteins called HISTONES to form Chromatin, which undergoes further coiling and organization to to linear CHROMOSOMES.

The chromosomes are structured within the nucleus, that are made up of the cell's genetic material (DNA). In eukaryotic cells, the nucleus houses the cell's DNA and directs protein synthesis (expression of the information encoded by genes).

Explanation:

When Emma first began dancing, her movements were ______ and awkward. Now, after several months of practice, Emma is able to produce fluid, smooth movements as a result of which of the following?

*all of the above is correct

Answers

Answer:

All of the above is the correct answer

Explanation:

What must happen to a chromosome for it to become chromatin?

Answers

Answer:

Chromatin condensation begins during prophase (2) and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis (2-5). ... However, when eukaryotic cells are not dividing — a stage called interphase — the chromatin within their chromosomes is less tightly packed.

Explanation:

The chromosomes will decondense in telophase back into chromatin

which molecule is needed for photosynthesis to occur?

Answers

Answer:

Carbon dioxide and water

Explanation:

plants prepare their food in presence of these molecules to produce sugar and oxygen which we required for survive

the blood pressure in the large systemic arteries is greatest during:

Answers

Answer:

when blood is pumped out of the heart into the arteries.

Explanation:

Hope its help you!!

pls help

When new bonds form, energy is __________.


released


disconnected


gone


stored

Answers

Answer:

When new bonds form, energy is 'released'

Find density if mass equal 400lb volume 20

Answers

Answer:

just use the formula d=m/v and plug in the numbers to solve the equation

Explanation:

What is the condition in a male in which the prostate gland enlarges and compresses the urethra, causing bladder, kidney, and urinary problems?

Answers

Answer:

b. Prostatic hyperplasia

Explanation:is correct

Circle the letter of the phrase that best completes the sentence.
The cell theory was
a. first identified in 1665
b. the end result of many scientific investigations.
c. described by Rudolf Virchow.
d. Both (a) and (b)

Answers

Answer: D

Explanation: the cell theory took many years to fully learn about and publish and many different scientists, biologists etc had to investigate in order to finalise the hypothesis. Also, it was first identified in 1665 by Robert hooke.

HELP ASAP PLS! just need 1 question:( i don’t understand what it’s asking !:(

Answers

Answer:

As the prey population increases, there is more food for predators. So, after a slight lag, the predator population increases as well. As the number of predators increases, more prey are captured.

Explanation:

If the birth rate and death rate are balanced in a population, how might a population increase in size?
a. By doubling
b. By emigration
c. By immigration
d. By an increase in density

Answers

A . By doubling because the population increases

most of the surface area of a plasma membrane consists of

Answers

Answer:

50% liquid and 50% protien by wieght

Fucus shows ______life cycle pattern
a)Haplontic
b)Haplo-diplontic
c)Diplontic
d)Diplo-haplontic​

Answers

Fucus shows the diplontic life-cylic.

Both the male and female fuse in the ostiole of the bump.

- BRAINLIEST answerer

the body system responsible for filtering wastes from the blood is the:

Answers

Answer:

urinary system

Explanation:

urinary system is responsible for filtering blood ,wastes and excessive water

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