Here are ...: Normally, all eggs carry an X-chromosome; half sperms carry X-chromosome and another half, Y-chromosome. A Y-chromosome sperm fertilizes an egg to make a male, and a X-chromosome sperm fertilizes an egg to make a female.
Answered 6/14/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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