HLTB20H3 Lecture Notes - Lecture 2: Birth Weight, Neonatal Intensive Care Unit, Advanced Maternal Age
Document Summary
Lecture 2: the forces of evolution and mating systems: the fundamentals of human. Evolution: a process a dynamic series of events that ultimately lead to change. Macroevolution: large-scale change typically associated with speciation. Microevolution: small-scale changes, typically over generation and accumulation of changes. Human populations are the by-product of both biology and culture, as a result: Many mechanisms through which population variation and change can arise: mutation, gene flow, random genetic drift, natural selection. Evolution is not the product of an individual but a population changing over time. An allele = alternative form of a gene (one member of a pair) that is located at a specific position (locus) on a specific chromosome. Each allele of the pair is inherited from parents. Mutation: change in genetic code resulting in change in an allele. The basic creative" force in evolution only way to produce new" variation.
