An egg usually has X chromosome, but in some cases they contain Y chromosome.

True

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False

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Solution

The correct option is B
False

An egg will always have X chromosome in it. The sperm however may either have an X chromosome or a Y chromosome in it. This ensures that females have XX chromosomes and males have XY chromosomes.

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Similar questions

An egg contains either X or Y chromosome and a sperm contains X chromosome.

What will be the sex of the child born :

(a) if X chromosome carrying sperm fertilizes an ovum containing X chromosome?

(b) if Y chromosome carrying sperm fertilizes an ovum containing X chromosome?

48

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