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Anon25 [30]
3 years ago
10

Why do polygenic characteristics have many phenotypes?

Biology
1 answer:
chubhunter [2.5K]3 years ago
5 0

Answer:

The involvement of more than two genes.

Explanation:

The polygenic characteristics have many phenotypes because more than two genes governs the phenotype of individual organism. The single gene contains a pair of alleles that codes for two phenotype and two genes will code for 4 phenotype. Thus, more than two genes for example, three genes will have six phenotypes.

The skin color and height are polygenic characterstics in humans.

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A cross between two individuals that are heterozygous for eye and skin color would be an example of a _____ cross.
8090 [49]

A cross between individuals that are heter0zyg0us for two different traits is a dihybrid cross. <em>A cross between two individuals that are heterozygous for eye and skin color would be an example of a _</em>dihybrid<em>_ cross.</em>

----------------------

Dihybrid crosses involve individuals that expresses two different traits and are heter0zyg0us for each of them.

So let us imagine we are studing the characters eye color and skin color. Let us assume that both of them are coded by single diallelic genes.

For eye color there is

  • Dominant allele B that codes for brown eyes
  • Recessive allele b that codes for blue eyes

For skin color there is

  • Dominant allele A that codes for black skin
  • Recessive allele a that codes for white skin

So, an individual that is heter0zyg0us for both of them, is BbAa.

If this person crosses to another person with the same genotype, we are talking about a <u>dihybrid cross</u>, because two dibybrid individuals are involved.

                             Cross:    BbAa      x      BbAa

According to this information, we can aswer the question:

<em>When crossing two individuals that are heterozygous for eye and skin color we are referring to a</em><em> dihybrid cross.</em>

-----------------------------------

Learn more about dihybrid crosses at

brainly.com/question/1185199?referrer=searchResults

brainly.com/question/24076691?referrer=searchResults

6 0
2 years ago
Sometimes an organ can be replaced by moving it from one part of the body to another. This can be done, for example, to replace
Kitty [74]

Answer:

rejection of the transplanted organ would not be expected.

Explanation:

Organs can be defined as specialized body tissues united to perform specific functions in living organisms. Some examples of organs found in humans are brain, bladder, kidney, heart, intestine, eyes, lungs, liver, etc.

In the field of Medicine and Surgery, an organ is sometimes replaced for specific reasons, by moving it from one part of the body to another; this process is generally referred to as a transplant. Thus, it's mainly done to replace damaged skin or joints in the body of a living organism such as humans.

Hence, in these cases, rejection of the transplanted organ would not be expected because an examination and matching of the organ is carried out by the medical professionals before transplant.

8 0
3 years ago
Looks like fluffy cotton ball
kiruha [24]
What looks like fluffy ball?
WHAT DOES?
4 0
3 years ago
What is the definition of the word enzyme
ANTONII [103]

Answer:

any of numerous complex proteins that are produced by living cells and catalyze specific biochemical reactions at body temperatures

3 0
3 years ago
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In the case of a complaint of food-borne illness, the logs for temperature control must be made available to whom?
Tasya [4]

Answer:

the public

Explanation:

anyone who asks for the information should receive it- especially the people who filed the complaint

3 0
3 years ago
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