Why does the male determones the sex of his offspring?

Question

explain please.

Answer 1

A male is XY chromosome and a female is XX. When having a child, each parent passes down one chromosome. Since the woman must pass down an X, the chromosome passed down from the male determines the sex

Answer 2

An egg is half the genetic material from the mother. Since it is XX, then she can only pass on the X chromosome. The sperm is likewise half of the father's genetic makeup, which is originally XY. The split means the sperm is either an X or a Y, which then joins the X chromosome in the egg. Two X is once again a female, or an X and Y combination creates a male, and the cycle continues with their offspring. (By the way, the terms X and Y are used because that is what the chromosomes look like. There are 22 pairs of X chromosomes that are not sex related (eye color, hair color, etc), and the 23rd pair is the sex chromosomes, which are either XX or XY. See photo below.)

Blessings

Answer 3

A lot of dancing around the issue, here, Yes, the male contributes a Y chromosome and this is the " how " of it, but you asked why does the male determine sex. The SRY region on that Y chromosome ( sex determining region ) at about 7 to 8 weeks into gestation begins the cascade that determines the sex of the fetus. It turns on a number of genes on other chromosomes, that release hormones that make us male. At the same time it closes one of the two developing sex regions; female in this case.

PS Without the SRY region and it sometimes ends up on a X chromosome, there is no male made.

Answer 4

That depends on the genetic system of a taxon. In mammals including humans, there are sex chromosomes.
Each gamete (reproductive cell) has one sex chromosome, either X or Y (their names allude to their shape). At fertilization the male and female gametes fuse, a pair of sex chromosomes is constituted, and in that moment the sex of the embryo is determined: XX --> female, XY--> male.
Birds have a similar system, but with ZW --> females and ZZ --> males (some insects are like this too).

In contrast, the sex of 'reptiles' is determined by incubation temperatures. Other animals have different systems for sex determination.

Answer 5

If a male isXY then his sperm will be either X or Y. If a female is XX, then all her eggs will be X. So on fertilization, the XY makes a male, and the XX makes a female.

Answer 6

That's the way it happens according to science. BJ has it right