PSYC 2740 Lecture Notes - Lecture 3: Abo Blood Group System, Mendelian Inheritance, Egg Cell
9 Dec 2016
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Document Summary
Phenotype: one"s observable or measurable characteristics forming a zygote. Conception: the moment of fertilization, when a sperm penetrates an ovum, Zygote: a single cell formed at conception from the union of a sperm and an ovum. Chromosome: a threadlike structure made up of genes; in humans there are 46 chromosomes in the nucleus of each body cell. Genes: hereditary blueprints for development that are transmitted unchanged from generation to generation. Deoxyribonucleic acid (dna): long, double stranded molecules that make up chromosomes. Mitosis: the process in which a cell duplicates its chromosomes and then divides into two genetically identical daughter cells. Meiosis: the process in which a germ cell divides, producing gametes (sperm or ova) that each contain half of the parent cell"s original complement of chromosomes; Crossing over: a process in which genetic material is exchanged between pairs of in humans, the products of meiosis contain 23 chromosomes chromosomes during meiosis.
