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17 questions
A random change in allele frequencies over generations brought about by chance.
genetic drift
gene flow
Cockroaches becoming increasingly resistant to pesticides is an example of
disruptive selection
genetic drift
directional selection
stabilizing selection
Mutations are random while natural selection is NOT
True
False
Emigration
genetic drift
gene flow
When allele frequencies change due to individuals leaving a population
genetic drift
gene flow
Founder effect and bottlenecks are two extreme cases
genetic drift
gene flow
Blue Jays introduce new alleles to oak forests as they make hundreds of round trips carrying acorns from oak trees a mile away to new soil in their home territory for winter.
genetic drift
gene flow.
Genetic fitness means that an organism's ability to do what is high?
lift weights really well
reproduce effectively
attract other members of their species
survive environmental disasters
Microevolution happens in
species
individuals
populations
households
Natural selection requires ______________ to happen in a population.
hundreds of years
variation
low genetic fitness
high genetic fitness
_______________ is also required for natural selection to occur.
Lack of resources
Multiple species
Competition for resources
Darwin
Phenotypic forms at both ends of the range are favored and the intermediate forms are selected against.
directional selection
stabilizing selection
disruptive selection
May result when heterozygotes are selected AGAINST.
directional selection
stabilizing selection
disruptive selection
What type of selection is depicted in the picture where one phenotype is favored?
stabilizing
directional
disruptive
What type of selection is shown in the image?
Stabilising
Directional
Disruptive
What type of selection is shown in the image?
Stabilising
Directional
Disruptive
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