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worty [1.4K]
2 years ago
4

In humans, free earlobes (E) are dominant to attached earlobes (e) and the presence of freckles (F) is dominant to the absence o

f freckles (f). If an individual heterozygous for both of these traits were to mate with an individual with attached earlobes and no freckles, what is the probability of having a child with attached earlobes and freckles?

Biology
1 answer:
lianna [129]2 years ago
3 0

Individual heterozygous for both of these traits has the genotype EeFf while an individual with attached earlobes and no freckles has the genotype eeff (recessive homozygous for both traits). So:

P: EeFf  x  eeff

F1: (table)

A child with attached earlobes and freckles will have eeFf genotpe from these parents, and the probability is 4/16 or 1/4 (25%).

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