Biological species concept
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groups of ACTUALLY OR POTENTIALLY INTERBREEDING populations that
are REPRODUCTIVELY ISOLATED from other groups
Genetic Drift
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, RANDOM CHANGE in FREQUENCY of a genetic trait in a population
- no effect on BIG populations
- dec variation w/in pop
- inc variation AMONG pop
Genetic drift can lead to an allele being "fixed"
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100% of the alleles in the population will be a certain type (ALL yellow
flowers instead of white)
What is a POPULATION?
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ALL individuals in a SINGLE species that live and reproduce in the SAME
geographic area ("gene pool")
What can GENERATE genetic variation?
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- Mutation
(random effect; duplication errors)
Give this one a try later!
groups of ACTUALLY OR POTENTIALLY INTERBREEDING populations that
are REPRODUCTIVELY ISOLATED from other groups
Genetic Drift
Give this one a try later!
, RANDOM CHANGE in FREQUENCY of a genetic trait in a population
- no effect on BIG populations
- dec variation w/in pop
- inc variation AMONG pop
Genetic drift can lead to an allele being "fixed"
Give this one a try later!
100% of the alleles in the population will be a certain type (ALL yellow
flowers instead of white)
What is a POPULATION?
Give this one a try later!
ALL individuals in a SINGLE species that live and reproduce in the SAME
geographic area ("gene pool")
What can GENERATE genetic variation?
Give this one a try later!
- Mutation
(random effect; duplication errors)
