Reproduction%20Slides%201

Reproduction%20Slides%201 - Gametogenesis Oogenesis...

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Unformatted text preview: Gametogenesis Oogenesis Spermatogenesis Mitosis Oogonia (germ cells) Spermatogonia (germ cells) Meiosis Spermatocyte Oocyte Spermatid Sperm Egg Uterus Zygote No Zygote I n fe m a le s is c a lle d I n m a l e s i s c a l l e d C e lls u n d e r g o C e lls u n d e r g o P r o l i f e r a t i o n o f P r o l i f e r a t i o n o f Replication of R e p l i c a t i o n o f Divides into Divides into Divides into Divides into Develops into Replication of Replication of R e p l i c a t i o n o f T ra vels to T r a v e l s t o F e r t i l i z a t i o n o f e g g & s p e r m N o f e r t i l i z a t i o n Meiosis Human Physiology 2 IPHY3480 Reproduction & Development Reproduction in Humans sexually dimorphic males and females are physically distinct are they behaviorally &/or psychologically distinct?? role of sex hormones not clear mate for pleasure as well as procreation human sexual activity is not driven by cyclical hormonal fluctuations Sex is genetically determined Humans have 23 pairs of chromosomes 22 pairs of autosomal chromosomes X and Y = 1 pair of sex chromosomes Sex is genetically determined Gametogenesis: development of a gamete (sex cell) Germ (sex) cells exist within the embryonic gonad Mitotic divisions increase the number of germ cells...
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Reproduction%20Slides%201 - Gametogenesis Oogenesis...

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