I believe that the y chromosone is that of female offspring, which parent does the y chromosone come from?

Answer 1

The Y chromosome comes from the male parent ONLY, not from the female. Genetic (take note genetic, not phenotypic since some genetic males are known to be phenotypically female due to the absence of the SRY gene found at the tip of the Y chromosome and other factors) males have both sex chromosomes XY in all somatic (therefore diploid) cells. In their sperm, which also came from primordial germ/somatic cells and differentiated into male gametes after the process of meiosis, therefore, there would either be an X or Y sex chromosome in each since they are haploid. Equivalently, genetic females have two X sex chromosomes in each somatic cell so that when gametes are produced, all of the gametes will have an X chromosome and none will have a Y one. During fertilization, the sex chromosomes in each gamete will combine. Remember that sperm can have either an X or Y chromosome and all eggs have an X chromosome and there are two combinations possible. A sperm with a Y chromosome fertilizing any egg will produce a *genetic* male while a sperm with an X chromosome fertilizing any egg will produce a *genetic* female.

Answer 2

The Y chomosone comes from the male, the female egg only contain X.

The male gametes or sperm cells in humans and other mammals are heterogametic and contain one of two types of sex chromosomes. They are either X or Y. The female gametes or eggs however, contain only the X sex chromosome and are homogametic. The sperm cell determines the sex of an individual in this case. If a sperm cell containing an X chromosome fertilizes an egg, the resulting zygote will be XX or female. If the sperm cell contains a Y chromosome, then the resulting zygote will be XY or male.

Answer 3

Hello =)

Women are XX
Men are XY
Women always contribute 1 X chromisome..
Men contribute either an X or a Y
This ensures the "more or less" equal number of males and females within a species.....

Some men can only produce one or the other, from some sort of defect.....this is why some couples can have 10 children, and, despite the odds, all of them will be the same sex....

Henry VIII of England is suspected to have been one such person..he had many daughters until finally producing one, very sickly little boy....



Namaste, and Happy New Year,

--Tom

Answer 4

the Y chromosome does not come from the female parent, but rather the male parent. looking at the karotype (all chromosomes lined up with their homologous pair from each parent) of a female, females have 2 X's (XX) and males a X and Y. all of a females eggs are X's, but a males sperm has X's and Y's. if an X sperm and a X egg fertilize they produce a female. if a Y sperm and X egg fertilize they produce a male. therefore men, with their sperm, are responsible for producing a male or female child.

Answer 5

The Y chromosome comes from the male. The female can contribute the Y chromosome because she only have two X's, XX. The make can because he has one X and one Y, XY.

XX= female
XY= male

Answer 6

In placental mammals (including humans), the Y chromosome determines maleness. The Y chromosome comes from the father.

Answer 7

Male parent gives the Y chromosome.

Answer 8

Y chromosome comes from the male....An XX pair leads to a female and XY pair leads to a male...

Answer 9

Females have XX chromosomes, while males have XY. So, only males can give off the "Y" to produce male children.

Answer 10

The male of the species provides the sex chromosome.