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Rzqust [24]
3 years ago
6

Polygenic means that most traits are controlled by ________.

Biology
1 answer:
Snowcat [4.5K]3 years ago
5 0

Answer: Polygenic means that most traits are controlled by an additive effect of two or more genes on a single phenotype.

Explanation: Polygenic inheritance or quantitative characters are those that vary in the population along a continuum. For example, height, skin color, etc.

Often, penetrance, pleiotropy, epistasis, expressivity and environmental factors are involved in producing a continuous distribution of phenotypes.

Traits such as height that show a continuous range of variation and do not behave in a single Mendelian fashion are known as quantitative or complex traits.

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the answer is </span>25/37632
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How are those 3 characteristics different for rocks?
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How many different offspring genotypes are expected in a trihybrid cross between parents heterozygous for all three traits when
aalyn [17]

Answer:

27 genotypes and 8 phenotypes

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Supposing that the genotypes of both of the parents are AaBbDd (A, B and D are dominant over a, b and d).  After completing the Punnett square, you can predict the following offspring:

I add an image where you can see all the 27 genotypes and frequencies.

Finally, all the 8 phenotypes with the following frequencies:

27/64 A-B-D-

9/64   A-B-dd

9/64   A-bbD-

9/64   aaB-D-

3/64   A-bbdd

3/64   aaB-dd

3/64   aabbD-

<u>1/64    aabbdd </u>

Total 64/64

Note: when a phenotype is A-, it means that it came from either genotype, AA or Aa. The same applies to B- (BB or Bb) and D- (DD or Dd)

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True or False. Ocean ecosystems located near farms are healthier than in other areas
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