Question

Class 10 Chapter- GENETICS
A certain couple got only four daughters in a row and no son. Does it mean that the husband doesn't produce Y- bearing sperms? EXPLAIN IT
NO SPAM

Answer 1

no, it  doesn't  mean that  husband doesn't produce Y- bearing sperms.

All children have 'chromosomes' whether the child is girl or boy. Women have XX, Men have XY. Children inherit one piece from each parent. A baby can only receive an X from their mother because their mother only has X. If the baby gets an X from their father, they will have XX and be a girl. If they inherit their fathers Y, they will have XY and be a boy.since the Y only can come from their father, this method of inheritance relies on the ability of the father to deliver Y genetic material. A man has two types of sperm. Sperm that is predominantly X carrying and sperm that is predominantly Y. There is a gene(s) that control what sort he produces.

It doesn't mean he doesn't have Y bearing sperm. It just means he may be genetically predisposed to X bearing sperm.

Answer 2

It doesn't mean that husband donor produce Y bearing sperms

But what happens is during fertilisation all the sperms surround the ovum n it depends on whether X or Y sperm enters it...it depends here..

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