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The Observation That Although Fresh Water Habitats Account for Only

Question 34
Multiple Choice

The observation that although fresh water habitats account for only 1% of the Earth's water,they are home to 36% of the known species of fish is due to ____ speciation. A)prezygotic B)postzygotic C)allopatric D)sympatric E)outgroup

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Two species of finches found on the same Galapagos island but feeding on different food sources is an example of ____ speciation. A)allopatric B)sympatric C)prezygotic D)postzygotic E)outgroup
Q 36
Formation of a tetraploid plant species from two different diploid parental species of plants is an example of A)punctuated equilibrium. B)gradualism. C)extinction. D)a postzygotic barrier to evolution. E)a prezygotic barrier to evolution.
Q 37
Scientists have a complete fossil record showing the evolution of horses over millions of years,with the legs becoming longer and the teeth larger,as ancestors of the modern horse adapted from living in forest to grasslands.This is an example of A)punctuated equilibrium. B)extinction. C)a postzygotic barrier to evolution. D)gradualism. E)a prezygotic barrier to evolution.
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