01:119:115 Lecture Notes - Lecture 21: Sympatric Speciation, Allopatric Speciation, Ecological Niche
12 Apr 2018
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Changes in allele frequency over time still same species a) b) c) One species splits into 2 or more species. Species share many characteristics because descended from common ancestor. Group of population whose members have potential to interbreed in nature and produce viable fertile offspring. Do not exchange genes with a different species reproductive isolated. How members of a species interact with living and nonliving parts of environment. Mechanisms that prevent members of different species from interbreeding and producing viable, fertile offspring. 2 species live in same area but live and breed in different habitats within the area. Mating is attempted sexual structures prevent success a) b) Prevent hybrid zygote from developing into a viable fertile adult. Can mate with each other or with parent species. However, their offspring frail or infertile a) a) a) b) a) b) a) Occurs when a population becomes reproductively isolated from other population in species gene pools begin to diverge.
