How is the gender of an offspring determined?

Father. The gender of an offspring is determined by the father. The sperm carries the XY chromosome, and only one of the two is transferred to the offspring. Bear in mind that the female egg carries XX chromosomes, and only one X is transferred to the offspring. The Y chromosome is the male determine factors. It carries a gene that encodes for testis determining factor.

If an offspring gets the Y chromosome from the father, the offspring is likely to be a male with the XY chromosome. If the X chromosome is transferred from the father, the child has XX chromosomes, and it is most likely a girl child. The chromosomal sex is determined from the time of fertilization.