PSYC 2500H Study Guide - Final Guide: Sudden Infant Death Syndrome, Intrauterine Growth Restriction, Aids

• School: Trent University
• Department: Psychology
• Course: PSYC 2500H
• Professor: Geoffrey Navara

Document Summary

Genotype: the genetic endowment that an individual inherits. Phenotype: the ways in which a person"s genotype is expressed in observable or measurable characteristics. Conception: the moment of fertilization, when a sperm penetrates an ovum, forming a zygote. o o. Zygote: a single cell formed at conception from the union of a sperm and an ovum. Growth of the zygote and production of body cells: mitosis: the process in which a cell duplicates its chromosomes and then divides into two genetically identical daughter cells. Human beings have germ cells that serve one special hereditary function to produce gametes (sperm in males and ova in females). Crossing-over: a process in which genetic material is exchanged between pairs of chromosomes during meiosis. Next, pairs of duplicated chromosomes (some of which have been altered by crossing -over) segregate into two new cells, each of which contains 46 chromosomes.