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marysya [2.9K]
3 years ago
14

John has blonde hair,witch is a recessive trait. However both of his parents have brown,a dominant trait. Is this actuallly poss

ible? Why or why not be sure to mention the genotype as part of your exlanation
Physics
2 answers:
Zigmanuir [339]3 years ago
7 0
If blonde is 'b' and brown is 'B', the parents could have both been Bb; therefore resulting in a 1/4 chance of John being blonde
Salsk061 [2.6K]3 years ago
3 0
B b
B BB Bb

b Bb bb

The only way for John to have blonde hair is for both his parents to have one recessive gene.
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