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Â· just now. Report Abuse. D! The females have two copies of the X chromosome whereas the male have one X and one Y. Technically, all humans have 23 pairs but the last pair are the sex chromosomes and differ for gender. Someone To Help Â· 3 years ago. Thumbs up. 0.
How sex is determined. Humans have an additional pair of sex chromosomes for a total of 46 chromosomes. The sex chromosomes are referred to as X and Y, and their combination determines a personâs sex. Human females have two XX chromosomes while males possess an XY pairing.ow sex is determined. Humans have an additional pair of sex chromosomes for a total of 46 chromosomes. The sex chromosomes are referred to as X and Y, and their combination determines a personâs sex. Human females have two XX chromosomes while males possess an XY pairing.