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riyaz riyaz
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12 years ago
how does a sperm fertilizing and egg create new combinations of alleles in the zygote ?
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12 years ago
the sperm hold half, the egg holds half, when they fuse the alleles join together giving aspects of both parents depending on the dominant genes.

(example)
black is the dominant gene (theoretically)
B= black    b=blonde

BB=black hair      Bb= black hair    bb = blonde hair
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