BIOLOGY 1101 Lecture Notes - Lecture 20: Macroevolution, Microevolution, Bubonic Plague
6 Sep 2016
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Document Summary
Density dependent influences: their relevance depends on the population size. Density independent influences: their relevance is the same regardless of population size. Biological species concept- a group of individuals that interbreed in nature. Don"t always know whether they could interbreed (e. g. extinct species) Some very different things are capable of interbreeding, even if they generally don"t. Allopatric speciation- speciation that occurs between geographically separated from one another. Sympatric speciation- speciation that results from one ancestral species in the same geographic location. Macroevolution: is typically defined as that which occurs at or above the level of. Microevolution: is typically considered below the species level.
