The gender or sex of the child is determined by the chromosome pairs delivered by the parents.
The formation of a boy or girl will be dependent on the chromosome delivered by the male parent.
The sex determination in the child can be explained by:
1. Females have XX chromosomes. The chromosomes are purebred and the female will only contribute to the transmission of the X chromosome to the offspring.
2. Males have XY chromosomes. The chromosomal pair is heterozygous, and there is a 50-50 chance, that the chromosome delivered by the male parent to the offspring can either be X or Y.
3. The genotype or the sex of the child is determined by the type of chromosome contributed by the male parent.
Thus, the woman does not have a main role in determining the sex of the child.
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