EVERYDAY SCIENCE

Detailed explanation-1: -In the XY sex-determination system, the female-provided ovum contributes an X chromosome and the male-provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively. Therefore it is said that father determines the sex of the child.

Detailed explanation-2: -It’s all about Dad’s genes A man’s X and a woman’s X combine to become a girl, and a man’s Y combines with a woman’s X to become a boy. But if the sperm don’t have equal Xs and Ys, or if other genetic factors are at play, it can affect the sex ratio.

Detailed explanation-3: -Every egg has an X sex chromosome; a sperm can have either an X or a Y sex chromosome. If the sperm that fertilizes an egg has an X chromosome, the baby is female; if it has a Y chromosome, the baby will be a boy.

Detailed explanation-4: -The sex of children is decided by the X or Y chromosome inherited from the father. A male has XY chromosomes and a female has XX chromosomes. If a sperm carrying X chromosome from the father gets combined with the X chromosome from female, then the combination will be XX and the child will be a baby girl.