2006-12-20 09:28:46 · 15 answers · asked by iwishiwasbritish 1 in Social Science ➔ Anthropology
By the chromosome, I guess.
2006-12-20 09:30:55 · answer #1 · answered by D.J 5 · 0⤊ 2⤋
It takes a pair of chromosomes to determine sex. XX = female, XY = Male. The egg always has the X chromosome, so is therefore naturally female. The male sperm provides either the X or the Y chromosome to determine sex. Each spermatozoa cell is either an X or a Y , so it's the lucky little guy that gets through that determines the baby's sex.
Cave
2006-12-20 09:38:54 · answer #2 · answered by caveman 3 · 1⤊ 2⤋
A lot of answers off the point. The SRY region on the Y chromosome determines the sex of a baby, Obviously, if you have two X chromosomes, you will be female, the default body plan among humans. At about eight weeks into development, The SRY region is activated, which is a " turn on switch " for a cascade effect involving other genes on other chromosomes. Two hormones are released in this cascade; one closes off the developing female genitalia, and the other, testosterone proceeds to develop a male.
2006-12-20 12:19:09 · answer #3 · answered by Anonymous · 0⤊ 2⤋
If the couple finds each other attractive, if he's rich enough, if her body's good, or in some cases, if the price is right, then it is determined that there will be sex.
2006-12-21 01:32:16 · answer #4 · answered by cuban friend 5 · 0⤊ 1⤋
The male determines the sex of the child. (Chromosomes)
2006-12-21 07:11:05 · answer #5 · answered by Anonymous · 0⤊ 1⤋
All babies start out as females, it is the father's dna that determines the sex of the child, though.
2006-12-20 09:32:11 · answer #6 · answered by â¤??? ?å???? 4 · 1⤊ 1⤋
A zygote is made up of an egg and a sperm. The egg has the chromosomes XX. A sperm has those for XY. If and X from each parent combines, you get a female. If an X and a Y combine, you get a male.
2006-12-20 09:37:14 · answer #7 · answered by Anonymous · 0⤊ 2⤋
Chromosomes determine what sex you will be before you are born while you are in the womb and still developing.
2006-12-20 09:38:26 · answer #8 · answered by crawler 4 · 0⤊ 2⤋
through chromosomes. male has two type of chrosomes X and Y .while female has same single type that is XX
in any case female can donate only X and male either X or y if he donate X then xx make female and if man participate Y then a malechild will born
2006-12-20 09:37:43 · answer #9 · answered by shamsayasmin 3 · 0⤊ 2⤋
All men have two types of sperm, X and Y. If the egg is fertilized by an X sperm the baby will be a girl. If the egg is fertilized by a Y sperm the baby will be a boy.
2006-12-21 09:14:19 · answer #10 · answered by Gemini Girl 4 · 0⤊ 1⤋