Q. 4.     How is the sex of the child determined in human beings?

Answers (1)
P Pankaj Sanodiya

Half the male gametes have X-chromosomes and the other half have Y-chromosomesThe human male has one X-chromosome and one Y-chromosome. In other words, The human male has one X-chromosome and one Y-chromosome On the other hand, all female gametes have only X-chromosomes. If a sperm carrying Y-chromosome fertilizes an ovum then the child born will be a boy.

On the other hand, if a sperm carrying X-chromosomes fertilizes an ovum then the child born will be a girl.

X + X = Girl

X + Y = Boy.

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