2007-11-27 15:23:44 · 5 answers · asked by tk 1 in Science & Mathematics ➔ Biology
The sperm cell
If it carries an X you have a daughter
If it carries a Y you have a son
So don't blame Mum if things aren't how you wanted them
2007-11-27 21:15:46 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The mother as a female is always XX. The father is XY. The only types of gametes the mother can produce are X while the father can produce either X or Y so the sex determining cell is the father's sperm.
2007-11-27 23:30:44 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The father's sperm, or sperm cell. Human females have both XX chromosomes so all of their eggs are X in their haploid state.
Human males are XY, so half of their sperm cells are X and the other half are Y.
If an egg is fertilized by an X chromosome containing sperm, the zygote will be XX and female.
If an egg is fertilized by a Y chromosome containing sperm, the zygote will be XY and male.
So that's why the father's sperm cells determine the sex of a child.
2007-11-27 23:27:00 · answer #3 · answered by BP 7 · 1⤊ 0⤋
its whether the father donates and X or a Y chomosome as to whether the child will be male or female.
2007-11-27 23:27:55 · answer #4 · answered by dark_princess 4 · 0⤊ 0⤋
sex cell can be sperm cell or egg cell
2007-11-27 23:30:48 · answer #5 · answered by ruffa 2 · 0⤊ 2⤋