the change in heritable characteristics of biological populations over successive generations.
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10
What is a post-zygotic mechanism
Occur after a reproductive event has occurred, including fertilisation, in which a zygote has formed (which is a hybrid of two closely related species)
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seesaw
Swap points!
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seesaw
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rocket
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lifesaver
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10
What is genetic drift
Random changes in the frequency of alleles. Has more impact on small populations. Change in the frequency of alleles in the population due to chance events
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baam
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magnet
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fairy
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lifesaver
Give 25 points!
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10
Define population
Consists of members of one species living in a particular place at a particular time
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Define species
A population of organisms that are capable of interbreeding to produce live, viable, and fertile offspring
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What is a pre-zygotic mechanism
Act to restrict members of different species from breeding.
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What is gene flow
Movement of alleles between different populations of the same species. When species move in & out of populations.
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What is a gene pool
the sum of all genetic material and variability within the population
