Source
C) XX-XO method: In the process of sexually transmitted insecticides, cockroaches, spleen insects, sex is determined. In this case, there are two X chromosomes and the male (XO) animals in the wife (XX) of the animal have only one X chromosome. The absence of Y chromosome is expressed by zero (O) for no Y chromosomes. The type of male gamit fertilize the egg, so the gender is determined in this method. If male gamit contains X chromosomes, then the zygote will have two X chromosomes, which together with an X chromosome of the ovum, the animal is the wife (XX). On the other hand, if there is no X chromosome in the male gamits, the zygote will have a single X chromosome with a X chromosome of the egg. As a result, the animal will be male (XO). In this method, female animals are homogametic and there will be less chromosome than male animal cells (since male XO and WX XX).
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