Question

How is the sex of the child is determined in human beings?​

Answer 1

Answer:

it can be determined when the child is at the stage of foetus

Explanation:

because in this stage all the body parts start developin

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Answer 2

Answer:

A male has XY chromosomes and produces two types of male gametes. Half of the male gametes carry X chromosomes and the other half carry Y chromosomes. A female carries XX sex chromosomes, hence all the female gametes carry only X chromosomes. when a sperm fertilises the egg -

a) When a sperm carrying X chromosome fertilises an egg, the resulting zygote develops into a female / girl (XX).

b) When a sperm carrying Y chromosome fertilises an egg, the resulting zygote develops into a male / boy (XY).

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