BIO120H1 Lecture Notes - Lecture 9: Jerry Coyne, Allopatric Speciation, Ecological Speciation

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6 Sep 2018
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BIO120H1 Full Course Notes
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I look at the term species, as one arbitrarily given for the sake of convenience to a set of individuals closely resembling each other . Not flying = pro, no predators to eat you. Loss of wings increase diving in a more efficient manner. When we understand the origin of reproductive isolating factors, we understand the origin of species . Species, speciation & hybridization: what is a species, evolution of reproductive isolation, modes of speciation, adaptation & speciation, evolutionary significance of hybridization. Describing species, name of the species is important. Concepts vary among different groups of organisms - no universal species concept. A group of interbreeding natural populations that are reproductively isolated from other such groups . * although mayr first formally defined the bsc, dobzhansky first suggested the idea. Species that are reproductively isolated from other groups. * often known as the theory of geographic speciation since geographical isolation is involved (see coyne p. 178)

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