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10.3
gene pools and speciation
Essential Idea: Gene pools change over time.
Nature of Science: Looking for patterns, trends, and discrepancies: patterns of chromosome number in some genera can be explained by speciation due to polyploidy.
RESOURCES:
APPLICATIONS & SKILLS:
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Application: Identifying examples of directional, stabilizing, and disruptive selection.
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Application: Speciation in the genus Allium by polyploidy.
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UNDERSTANDINGS:
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10.3.U3 Reproductive isolation of populations can be temporal, behavioral, or geographic.
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10.3.U4 Speciation due to divergence of isolated populations can be gradual.
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10.3.U5 Speciation can occur abruptly.
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