PSYC 250 Chapter 2: Chapter 2
15 Dec 2015
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Document Summary
He regected the idea of epigenesis: the emergence of new structures and functions in the course of development. Gamete (germ cells) reproductive cells-egg and sperm-that contain only half the genetic material of all the other cells in the body. Each one contains only half the genetic material found in other cells. Gamete are produced through meiosis: cell division that produces gametes. Difference= woman eggs are formed during her prenatal dev. While man produce new sperm all the time. Reproducing=> launching of an egg=>from one of the womans ovaries into the adjoining allopian tube=> egg moves through the tube toward the uterus, it emits a chemical substance (attracts sperm). If sexual intercorse happend than conception: the union of an egg from the mother and a sperm from the father. It takes 6 hours for the sperm to travel only 200 ever get near the egg. Failure= 1. sperm gets tangled 2. wind up in the fallopian tube 3. sperm has defects.
