Freckles is dominant to no freckles; widow’s peak is dominant to straight hairline. A man and...
Freckles is dominant to no freckles; widow’s peak is dominant to straight hairline. A man and woman who both have freckles and have widow’s peak have a no freckled, straight hairline child. What are the chances the next child will have the same phenotype as the parents?
Homework Answers
Freckles = FF, Ff
No freckles = ff
Widows peak = WW, Ww
Straight hairline = ww
According to the question, both man and woman will be heterozygous for both the traits.
FfWw × FfWw
9 = F_W_ = freckles present, widows peak
3 = ffW_ = no freckles, widows peak
3 = F_ww = freckles present, straight hairline
1 = ffww = no freckles, straight hairline
Chances that progeny is showing same phenotype as parents = F_W_ = 9/16 × 100 = 56.25%
Answer is 56.25%.
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