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.
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