If skin color were inherited in a simple dominant or recessive pattern, like seed color in pea plants. What would be the genotypes of dark - skinned parents that could produce fair-skinned children?

Question

Biology

Rigoberto Weeks

23 July, 07:47

If skin color were inherited in a simple dominant or recessive pattern, like seed color in pea plants. What would be the genotypes of dark - skinned parents that could produce fair-skinned children?

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Answers (1)

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Dario Knapp · Answer 1

the genotypes of both parent would have been heterozygous for the trait.

Explanation:

In the simple dominant or recessive pattern as described by Gregor Mendel in the year 1865 involving single gene inheritance. Illustrating this pattern using dark-skinned and fair-skinned people. Assuming dark-skinned to be dominant over fair skinned. the dark skinned parents if both are homozygous for dark skinned would not produce a fair-skinned child but if both are heterozygous for dark skinned, a fair skinned child can be produced. using D to indicte dark-skinned and d to indicate fair skinned, we have:

genotype DD x DD

F1 genotype DD

phenotype dark skinned

genotype Dd x Dd

F1 genotype DD Dd dd

phenotype dark skinned and fair-skinned