Chromosomes from the father control whether a child is male or female.
What is fertilization?
It is the process of physical contact between the male gamete (sperm) and the female gamete (egg/ovum) which leads to the formation of the zygote.
What is the outcome of successful fertilization?
A zygote is formed which forms the fetus after gestation.
What determines the gender of the child?
The egg (female gamete) has the chromosomes 22+X only.
The sperm (male gamete) has either 22+X or 22+Y.
Fusion of 22+X sperm with ovum leads to a female child.
Fusion of 22+Y sperm with ovum leads to a male child.
Hence the father determines the gender of the child.
To learn more about chromosomes, female gamete, male gamete, and zygote here,
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