PSY210H1 Chapter Notes - Chapter 2: Embryonic Stem Cell, Prenatal Development, Zygote
Document Summary
Chapter 2 prenatal development and the newborn period. Epigenesist the emergence of new structures and functions in the course of development: conception gametes (germ cells): reproductive cells egg and sperm that contain only half the genetic material of all the other cells in the body. Meiosis: cell division that produces gametes. conception the union of an egg from the mother and a sperm from the father zygote a fertilized egg cell: developmental process. Embryo: the name given to the developing organism from the 3rd to 8th week of prenatal development. Fetus: the name given to the developing organism from the 9th week to birth. Mitosis: cell division that results in two identical daughter cells embryonic stem cells embryonic cells, which can develop into any type of body cell apoptosis: genetically programmed cell death. The four major processes of the underlie the transformation of a zygote into an embryo and the fetus:1).
