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colleen colleen
wrote...
Valued Member
Posts: 17076
13 years ago
What is genetic drift? Under what circumstances do you expect genetic drift to occur? Under what circumstances is genetic drift unlikely to be important? Does genetic drift increase or decrease genetic variation in populations?
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Sunshine ☀ ☼

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wrote...
Staff Member
13 years ago
Genetic drift is the change in allelic frequencies as a consequence of random processes. Genetic drift is expected to occur in small populations and is unlikely to be important in large populations. Genetic drift tends to decrease genetic variation.
- Master of Science in Biology
- Bachelor of Science
wrote...
13 years ago
it must be noted too that genetic drift occurs by chance, such as the flipping of a coin. An event like a storm blowing insects is an example of one of these chance events.
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