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Views: (1367) Date: (04-02-10) Time: (00:58:41) |
Description: In this Howard Hughes Medical Institute program, Dr. David Page, professor of biology at the Massachusetts Institute of Technology, addresses the age-old question of why sex exists, and shows how sexual reproduction can have advantages over reproduction by cloning. Even from a purely biological perspective, gender is a complex subject. Dr. David Page reviews the biological basis for sex, emphasizing the role of the sex chromosomes—the X and the Y—in mammals.