SEX DETERMINATION IN HUMAN

• Male has two sex chromosomes X and Y hence male produces 50% of sperms carrying X and 50% carrying Y, while female has two X chromosomes.
• After fusion of the male and female gametes the zygote would carry either XX or XY depending on whether the sperm carrying X or Y fertilized the ovum.
• The zygote carrying XX would develop into a female baby and XY would form a male.

Fig. sex determination