How do geographically isolated populations show differences in allele frequencies, and why are these differences significant?

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How does polyploidy contribute to speciation in the genus Allium?

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How can directional, stabilizing, and disruptive selection be identified in populations?

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What are the conditions under which speciation can occur abruptly?

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How does gradual divergence of isolated populations lead to speciation?

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What are the types of reproductive isolation, and how do they prevent populations from interbreeding?

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How does evolution depend on changes in allele frequencies within populations over time?

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What is a gene pool, and what does it consist of in an interbreeding population?

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What patterns, trends, and discrepancies led Morgan to question Mendel’s principles and identify non-Mendelian inheritance?

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How can a chi-squared test be applied to data from dihybrid crosses to determine significance?

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