PSYCH211 Chapter Notes - Chapter 2: Dementia, Heritability, Chorionic Villus Sampling
16 Mar 2017
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Document Summary
Genetic foundation: characteristics, which are determined by both genetic and environmental factors. One is inherited from the mother and one from the father. In the female, meiosis results in just one ovum; the remaining genetic material degenerates. In the male, four sperm are produced when meiosis is complete. Boy or girl: autosomes: the 22 matching chromosomes pairs in each human cell, sex chromosomes: the twenty-third pair of chromosomes- called xx in females and. Xy in males - which determine the sex of the individual: the x is a relatively large chromosome, whereas the y is short and carries little genetic material. Identical/ monozygotic twins: twins that result when a zygote, during ealy cell duplication, separates into two clusters of cells that have the same genetic makeup. Patterns of genetic inheritance: allele: each of two or more forms of a gene located at the same place on corresponding pair of chromosomes.
