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Heredity

A woman has t...

Question

A woman has two sex chromosomes. One is X, the other is:

A

Y

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B

X

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C

Z

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D

XX

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Solution

The correct option is B
X

A woman has two sex chromosomes and both of them are X. An egg always has an X chromosome; when it gets fertilized by a sperm carrying another X chromosome, it develops as a girl and when it gets fertilized by a sperm carrying Y chromosome, it develops as a boy.

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