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2001 Sex Determination Lecture 1

"Deciphering the Language of Sex" by David C. Page, M.D. Is it a boy or a girl? Dr. Page looks at how we define male and female and summarizes the development of human sex characteristics. He then explains the role of the sex chromosomes, X and Y, and, in particular, the SRY gene. Dr. Page demonstrates the differences between species that reproduce sexually and those that reproduce clonally without sex. A likely major advantage of sexual reproduction is that meiotic recombination and subsequent natural selection can weed out deleterious mutations.
(add to wire) HHMI's Holiday Lectures on Science
on Aug 12, 07

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