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Populations
Vocabulary
Variation
100
when a few individuals start a new colony it most likely results in
genetic drift through the founder effect.
100
What is the combined alleles of all the individuals in a population called
Gene pool
100
What are the two main sources of genetic variation
mutations and recombination
200
If the frequency of a particular allele that is present in a small, isolated population of alpine plants changes due to a landslide that leaves an even smaller remnant of surviving plants, then what has occurred?
Genetic drift
200
What is the movement of alleles from one population to another
Gene flow
200
How does genetic drift change a population's gene pool?
It causes random changes in allele frequencies in small populations.
300
genetic variation in a population increases the chance that some _________
individuals will survive
300
What is the type of isolation that occurs when the timing of reproduction is different between two populations?
temporal
300
which two processes within a population can lead to inherited variation?
mutation and genetic recombination through sexual reproduction
400
What is genetic drift that occurs after an event greatly reduces the size of a population called
bottleneck effect
400
What is it called when two species that are closely related become increasingly different through?
Divergent evolution
400
How does greater genetic variability within the population affect the Florida Panthers' reproductive success?
It reduces the expansion of harmful traits that result from inbreeding.
500
What is reproductive isolation
when members of different populations can no longer mate successfully.
500
What is the type of selection that occurs when individuals in a population with the intermediate phenotype are selected?
stabilizing selection
500
What best describes how independent assortment results in inherited variations within a species and how it contributes to evolution?
Independent assortment occurs when chromosomes separate during meiosis and causes variations that can be beneficial or harmful to a species