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

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

 sex determination in humans
sex determination in humans.

Sex of the child depends on the presence of chromosomes ‘X and ‘Y’. Chromosome ‘Y’ is dominant over the chromosome ‘X’. When both chromosomes X and Y are present, the sex of the child is male; while if both the chromosomes are X then the sex of the child is female.

Male: XY

Female: XX

Facts:

There are 50:50 chances for a male or female child.

Female produces only one type of chromosome that is X. So, Sex of the child does not depend on the mother. If the germ cell of father carries the x chromosome, the child is a girl; and if it carries y chromosome, the child is a boy.

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