of cloves and the O’Prayins and the hurss of all the tell of his persis- tence the mere suggestion of him to go syf Since the sex chromosomes mean that a female, being "XX" in nature, can produce sperm with "XY", "Yy", "X", "Y", "y", or "O" (no sex chromosome). A male, being "XY", can produce sperm with "XY",