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In the process, the nucleus of an egg is inserted into the cytoplasm of an egg from a donor female which has had its nucleus removed, but still contains the donor female's mtDNA. The composite egg is then fertilized with the male's sperm.
The father provides an X or Y chromosome; the mother always provides an X chromosome. Therefore, the sex of the child is determined by the chromosome of the individual sperm that fertilizes the egg.Male offspring carry XY chromosomes; female offspring carry XX chromosomes.n humans, it is the sperm which determines the sex of the child. The presence of a Y chromosome in the zygote is what determines that the child will be male. Only the fathe â¦ r has a Y chromosome (XY).