The discovery and study of the sex chromosome has acted as a huge myth buster throughout the population by educating people on the fact that the child's sex is determined by chance, not by the father or mother. There are various forms of sex determination in animals like XY system in case of mammals, many flies and some fishes; ZW system in case of birds, snakes, butterflies; XO system in case of drosophila, grasshopper and haplo-diploid system as in bees.
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