'Prezygotic isolation' presentation slideshows

The geography of speciation

The geography of speciation. most species form when geographic barriers block genetic exchange. Allopatric speciation. arguably the most common way species form evidence for allopatric speciation is common in biogeography: related species often occupy nearby, non-overlapping ranges.

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Speciation Outline

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Speciation

Speciation. Process by which species originate Origin of diversity we observe in nature. Outline. Species concepts Species numbers through time What drives speciation? Two examples Discussion. Species Concepts. Typological Biological Evolutionary Genealogical Ecological Cohesive.

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Ch 17 Speciation

Ch 17 Speciation . Lecture outline . Speciation, species and linneaus. Species concepts. Biological Species Concept: Lineage Species Concept:. Allopatric Isolation . http://wps.pearsoncustom.com/wps/media/objects/3014/3087289/Web_Tutorials/18_A01.swf. Sympatric Isolation .

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Speciation & Rates of Evolution

Speciation & Rates of Evolution. Biology 101B. Reproductive Isolation Two Types:. 1. Prezygotic Isolation Prevents reproduction by making fertilization unlikely Geographic isolation- separated by barrier (river, canyon)

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