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Helen [10]
3 years ago
15

What type of cross produces a 1:1:1:1 phenotypic ratio?

Biology
1 answer:
ser-zykov [4K]3 years ago
6 0
Cross between "Homozygous Dominant" & "Homozygous recessive" would result in offspring of phenotype 1:1:1:1. When linkage is not occurs!

Hope this helps! It's quite complicated. So, Pm me in case of doubt!
Happy Studying :)
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16. Why should the recessive phenotype be used first to determine the q squared value instead of the dominant phenotype to deter
podryga [215]

The recessive phenotype is used first to determine the q squared value because it is only expressed when h0m0zygous.

<h3>What is a recessive phenotype?</h3>

A recessive phenotype is a phenotype which expresses the recessive trait of a gene.

The recessive phenotype is always h0m0zygous for that triat to be expressed.

In the Hardy-Weinberg equilibrium equation, the allele and phenotype frequencies are given as follows:

  • p^2 + 2pq + q^2 = 1

where;

  • p^2 is the h0m0zygous dominant phenotype frequency
  • 2pq is the heterozygous phenotype frequency
  • q^2 is the h0m0zygous recessive phenotype frequency

Therefore, the recessive phenotype is used first to determine the q squared value because it is only expressed when h0m0zygous.

Learn more about recessive phenotype at: brainly.com/question/22117

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