G interrup4ngmeiosistodoublechromosome numbers

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Unformatted text preview:   How species form (divergence events) is an ac4ve area of research •  Typically, specia4on occurs over a span close to a million years, but we have examples of species evolving within a few hundred years •  Plant breeders can provoke “instant specia4on” via molecular tricks (e.g interrup4ng meiosis to double chromosome numbers) How do we define a species? •  There are many species concepts •  Despite intense disagreement on how to define species, we can recognize when we have two different species: How do we define a species? •  There are many species concepts •  Despite intense disagreement on how to define species, we can recognize when we have two different species: Interrup(on to gene flow Rapid specia4on: London’s Tube •  The London Underground was constructed in the 1860s •  The environment...
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This document was uploaded on 12/01/2012.

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