explain with an example how the sex of a baby is determined by chromosome
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X and Y chromosomes
the girl has xx chromosomes and boy xy chromosomes
the girl has xx chromosomes and boy xy chromosomes
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the chromosome number in germ cells producing the gametes are diploid i.e. 2n. It includes 22 pairs of autosomes and 1 pair of sex-chromosome i.e.(44+XX or 44+XY). These germ cells divide by meiosis. Due to this, gametes contain only haploid (n) number of chromosome i.e. (22+X or 22+Y). Two types of sperms are produced as (22+X) or (22+y) whereas oocytes are produced of only one type as (22+X).
if when (44+XX) come daughteris born and if (44+XY) chromosome comes son is born
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