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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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Miguel2233 Miguel2233
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12 years ago
The allele for brown eyes is dominant; the allele for blue eyes is recessive. Assume that a male has both alleles, but that a female has blue eyes. What percentage of their children will, on average have blue eyes?
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wrote...
#1
12 years ago
fifty percent for brown or blue

B - Brown
b - Blue

these are the possible combinations, the mother will always pass down a blue eyed allele, and the father can give either a blue or brown, theres a fifty percent chance of each.

Bb  the Brown from dad and the first blue from mom
Bb  the brown from dad and the second blue from mom
bb  the blue from dad and the first blue from mom
bb   the blue from dad and the second blue from mom

 sorry it's so confusing to type
wrote...
#2
12 years ago
B=brown b=blue
Man=Bb Woman=bb
kids= Bb Bb bb bb

50%
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