10 (5).ppt - Populations Change Is caused by Crossing over Independent assortment Fusion of gametes during fertilization Mutations Environmental

10 (5).ppt - Populations Change Is caused by Crossing over...

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Populations Change
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Is caused by : Crossing over Independent assortment Fusion of gametes during fertilization Mutations Environmental cues (changing gene expression)
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is a group of individuals that can interbreed & produce fertile offspring.
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is a localized group of individuals that belong to the same species
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Members of the same population are far more likely to breed with one another than with members of other populations.
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Studies changes that occur in the gene pool of populations It looks at changes in allele frequencies
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If genes exist with only one possible allele, we say it has a fixed frequency (It will be 1.0, or 100%).
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are the total of all the genes that are in a population
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Theorem that describes the gene pool of a nonevolving population . It is a mathematical relationship that shows Allele frequency
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It predicts that if certain factors remain constant……..the gene pool will have the same composition generation after generation
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