'Kaibab squirrel' diaporamas de présentation

Lesson Overview

Lesson Overview. 17.3 The Process of Speciation. THINK ABOUT IT. Factors such as natural selection and genetic drift can change the relative frequencies of alleles in a population, but this alone does not lead to development of a new species. How does one species become two?.

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horse

horse. donkey. Speciation. mule. Speciation. A. B. baby. Defined : evolution of new species from an existing species Species : group of organisms that can interbreed and produce fertile offspring 5 factors that lead to evolution Natural Selection Gene flow Mutations Sexual selection

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horse

horse. donkey. Speciation. mule. Speciation. A. B. baby. Defined : evolution of new species from an existing species Species : group of organisms that can interbreed and produce fertile offspring Factors that lead to evolution Natural Selection Gene flow Mutations Sexual selection

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17.3 Speciation

17.3 Speciation. WESTERN and EASTERN MEADOWLARK Different Mating Calls. Last Ice Age 110,000 to 10,000 years ago. Species - a population whose members can interbreed and produce fertile offspring. Speciation - the formation of a new species. KAIBAB Squirrel.

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Impacts on the Biosphere

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