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5 Cards in this Set
- Front
- Back
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Explain how adaptive radiation works:
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Emergence of numerous species from a common ancestor introduced an environment that presents them with new problems & opportunities. This creates new, different sets of natural selection conditions.
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Explain how sympatric speciation via polyploidy:
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Sympatric speciation results in a mess up of meiosis: Polyploidy will result when there are multiple chromosomes in the gametes.
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Sympatric Speciation:
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Differentiation of 2 species in the same place: less common, mainly seen in plants.
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Allopatric Speciation:
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2 different placts: 2 geographically isolated areas.
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Explain how each of the different postzygotic RIMS fuctions to impede gene flow:
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Reduced Hybrid Viability: Cannot resist disease, can't make it to adulthood.
Reduced Hybrid Fertility: Strong, tough, but does not produce gametes. Hybrid BReakdown: f1 generation hybrid being fertile & reproducing, but in the f2 it all falls apart. Does not reproduce. |
