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A woman has three consecutive female babies. Which of the following justifies the reason?

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a
She is homogametic
b
All sperms of husband have ‘X’ chromosome
c
Ova are fertilised by sperm with ‘X’ chromosome
d
Sperm with ‘Y’ chromosome has no fertilising ability

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detailed solution

Correct option is C

Fertilisation is a chance process. If sperm with ‘X’ fertilises the ovum, the zygote develops into female and sperm with ‘Y’ produces male after fertilisation. It is a 50-50 chance.

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