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  • Deciphering the Language of Sex

    Deciphering the Language of Sex

    Lecture

    (58 min 51 sec) Is it a boy or a girl? Dr. David Page looks at how we define male and female and summarizes the development of human sex characteristics.

  • Meiosis

    Meiosis

    Animation

    (5 min 53 sec) Meiosis, the form of cell division unique to egg and sperm production, sets the stage for sex determination by creating sperm that carry either an X or a Y sex chromosome. But what is it about the X or Y that determines sex? Also available in Spanish.