ANP 201 Lecture Notes - Lecture 4: G. H. Hardy, Wilhelm Weinberg, Genotype Frequency
Document Summary
Small scale evolution; changes in allele frequency from a generation to the next. Substantial change, exemplified by a speciation event (i. e. give rise to a new species) over many generations. *evolution is genetic change in a population or species. *populations are the smallest units that can evolve. *population/deme: a local group of organisms that have similar genes, interbreed, and produce offspring. *species: a group of related organisms that can interbreed and produce fertile, viable offspring. *in other words, a species is a group of organisms that are reproductively isolated from other populations. *the study of changes in a population"s genetic material (allele frequency) across generations. *examines how genotypic and phenotypic frequencies of the population change over time. *gene pool: all the genetic information in the breeding population. *equilibrium: a condition in which the system is stable and unchanging. *a population is in equilibrium if the frequencies of alleles for a particular trait remain constant across generations (absence of evolution)
