Chapters 17, 18, and 19 Test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| organisms change over time. | conclusion by Darwin
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| evolution that focuses on changes in the gene pools of populations | microevolution
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| evolution that focuses on changes that give rise to new species | macroevolution
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| a change in the genetic characteristics of a population of organisms over time. | evolution
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| differences in DNA sequences between the individuals in a population. | Results of Mutation
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| Arise from mutation | different alleles
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| new individuals contribute their alleles to the gene pool of a population | gene flow
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| Chance events that affect the survival and reproduction of individuals in a population | genetic drift
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| Three quarters of the flowers will be gray and one-quarter will be white. | phenotype frequency of progeny of heterozygotes
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| is the principal cause of evolutionary change. | variation acted on by natural selection
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| Evidence that support the hypothesis because dark-colored mice were attacked more in light environments and light-colored mice were attacked more in dark environments | adaptation by natural selection
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| Natural selection acted on the genetic variability present in the organism’s genomes.; | evolution
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| Adaptation by natural selection | nonrandom selection
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| Evidence that a humans and chimpanzees share a recent common ancestor | homologous structures
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| Number of individuals in a population with 200 alleles for each gene | 100
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| The frequency of q when p= 0.8 | 0.2
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| Genotype frequency | genotype/total genotypes
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| Rate of evolution of an organisms that reproduces slowly | slow evolution
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| Effect of stable environmental conditions on evolution | does not stimulate evolution
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| high mutation rate of HIV. | stimulate rapid evolution leads drug resistance
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| appear without regard to environmental pressures | mutations
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| makes the genetic composition of the two populations more similar. | gene flow
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| Greater effect on small populations than on large populations | genetic drift
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| Frequency of an allele = 1 | allele fixation by genetic drift
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| Bottleneck effect | type of genetic drift
loss of genetic variation
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| Stabilizing selection | emliominatoin of extreme in a bell curve
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