PSYC 2450 Chapter Notes - Chapter 3: Neurosis, Ethology, Amniocentesis
13 Mar 2013
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Document Summary
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 to form a zygote. First development that occurs after conception is protective: when a sperm cell penetrates the lining of the ovum, a biochemical reaction repels other sperm prevent them form repeating fertilization. Phenotype: the ways in which a person"s genotype is expressed in observable or measurable characteristics. Genotype: the genes that a person inherits. Zygote: a single cell formed at conception from the union of sperm and ovum. Chromosome: a threadlike structure made up of genes; in humans there are 46 chromosomes in the nucleus of each body cells. Genes: hereditary blueprints for development that are transmitted unchanged from generation to generation (units that builds single protein) Genes produce enzymes and other proteins that are necessary for creation and functioning of new cells, and regulate the timing of development.
