PSYC 2450 Chapter Notes - Chapter 3: Wella, Trisomy, 18 Months
23 Jan 2017
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Document Summary
Chapter approaches human development from a hereditary perspective . Genes on their own determine less than what we think most complex human characteristics are the result of an interplay between the forces of nature (heredity) and nurture (environment) Phenotype: a person"s observable or measurable characteristics looking to determine how one"s genotype is expressed as a phenotype. Conception: the moment when an ovum released by a woman"s ovary and on its way to the uterus via the fallopian tube is fertilized by a man"s sperm. The first development that occurs after conception is protective: when a sperm cell penetrates the lining of the ovum, a biochemical reaction repels other sperm preventing other sperm from repeating fertilization process. Zygote is a tiny cell that contains the biochemical material for its development from a single cell into a human being. New cell nucleus (zygote) contains: 46 chromosomes.
