General Ecology_Mahaffy_Date_031610

General Ecology_Mahaffy_Date_031610 - Speciation and...

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Speciation and genetics continued So what is a species? Phenotypic definition: Species are determined based upon what it looks like Reproductive definition: Same species if they can make fertile offspring together Definition which is used most often Phylogenetic definition: Based upon evolutionary decent Ecological definition: Do they do the same things? If so they are the same species Problems defining species Same species that look different Northern flicker bird Different species that look alike Deer mouse and the white-footed mouse open circle” species Salamander A breeds and has fertile offspring with salamander B who breeds and has fertile offspring with salamander C. When salamander C breeds with salamander A they cannot produce fertile offspring Where do we say that salamander A is no longer the same species a s salamander C? How do we define asexual species?
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General Ecology_Mahaffy_Date_031610 - Speciation and...

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