Which parent determines the gender of the baby?

Father: Women have 2 x chromosomes, men have an x and a y. The child will get one x from the mother, and either an x or a y from the father. If it is an x, you have a baby daughter. If a y, a son.

The father: It is randomly determined. In general, men will have an equal chance of producing y-sperm and x-sperm.

Who Makes Gender?: Men determine the gender of the baby. Boys have chromosomes x&y and girls have x&x. The y chromosome determines that the fetus will be a male and only men have a y chromosome. So, men determine the sex of the pregnancy. In cases of a single x chromosome, called turner syndrome, the child is female. For gender selection, we sort the sperm or test the embryos for the y chromosome.

Father: Males are made up of a total of 46 chromosomes (packages of dna), and two of those determine sex- an x chromosome and a y chromosome. Women also have 46 chromosomes but have two x chromosomes. Sperm contain a half set of dna- 23 chromosomes including an x or a y, to add up with the egg's 23 chromosomes and an x to make a baby. Xx is a girl, xy is a boy.

Ready 4 Complicated?: And the story of sex determination is actually far more complicated than many of us were taught in school. See dr. Alice dreger's "is anatomy destiny?" video on ted.Com: http://bit.Ly/14sy1xo also, check out video: "sex determination: more complicated than you thought lesson" created by john treml: http://ed.Ted.Com/on/c1lwtsab.