PSYB32H3 Lecture Notes - Lecture 2: Fragile X Syndrome, Chromosome Abnormality, Chorionic Villi
Document Summary
Chapter 2: heredity and the environment: genotype: the particular set of genes that a person inherits from her parents. The process of genetic transmission: ovum: the female germ cell, or egg, sperm: the male germ cell, head, where the hereditary information is, a full-term baby weighs 7 or 8 pounds and roughly 50cms long. Crossing over: the process by which equivalent sections of homologous chromosomes switch places randomly, shuffling the genetic information each carries. 3) (a) the male chromosome pairs separate to form two cells, each with 23 chromosomes (b) Some proteins give cells their characteristic physical properties. Other proteins do many other jobs, such as triggering chemical reactions, carrying messages, fighting foreign invaders, and regulating genes. Genetic influences on development: genes never work in isolation, but always in combination with environmental influences. Each inherited trait comes from one"s parent as a separate unit.
