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18 Cards in this Set
- Front
- Back
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variety of living things found on earth
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diversity |
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Darwin's term to describe the ability of individual to survive and reproduce
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fitness
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according to Darwin, successful organisms-
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adapt to new environments
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which kind of traits are suited for natural selection?
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traits that are inheritable
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scientists know that inheritable variation comes mainly from changes in
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genetic material
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a mutation is a change in
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an organism's DNA
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natural selection only affects variations in
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phenotype
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genetic drift is most likely to occur in
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small populations
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directional selection occurs in
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changes of allele frequencies in gene pool
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random changes of allele frequency in a species is called
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genetic drift
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for many traits, variation in phenotype corresponds to a variation in
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fitness |
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drug resistance in bacteria occurs due to
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mutation and natural selection
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what occurs due to mutations and or gene shuffling?
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inheritable variation
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due to reproductive isolation, members of 2 different species cannot
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interbreed
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in modern genetic terms, evolution is defined as any change in
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relative frequencies of alleles in a gene pool
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condition that exists when an allele becomes more or less common in a population by chance
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genetic drift
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theory that evolutionary change occurs slowly and steadily over long periods of time
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gradualism
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type of natural selection on polygenic that occurs when individuals at both the upper and lower ends of the curve have a higher fitness than those in the middle
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disruptive selection
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