01:119:115 Lecture 21: Lecture 21

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:115
• Professor: Professor Cardinale

Document Summary

B. microevolution: microevolution- change in allele frequency in populations over time, changes within species. D. species: species- a kind of organism, too broad of a definition, charles darwin in origin: , nor shall i here discuss the various definitions which have given the term species. E. biological species concept: useful to distinct species that reproduce sexually, developed by ernst mayr, 1942, several components, 1. ) Group of populations whose members have potential to interbreed in nature and produce viable offspring: 2. ) Gene flow between populations of same species: 4. ) A. introduction: bsc is common, but many other concepts exist- have different strengths and weakness, morphological species concept, ecological species concept, phylogenetic species concept, general lineage species concept. B. morphological species concept: morphological species concept- species distinguished by body shape and structure, applies equally well to sexual, asexual, extinct species, problem: disagreement over which features are most important.