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7.3
7.3
10
Biology
1st Grade
01/22/2011

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Term
define the three parts of microevolution
Definition
change in the gene pool of a population

change in the relative frequencies of alleles in the population

evolution of the smallest scale
Term
define the three parts of microevolution
Definition
change in the gene pool of a population

change in the relative frequencies of alleles in the population

evolution of the smallest scale
Term
what are the five causes of microevolution?
Definition
genetic drift
gene flow
mutation
nonrandom mating
natural selection
Term
describe genetic drift
Definition
changes in gene pool of a small population due to chance. Bottleneck effect, Founder effect
Term
Describe the bottleneck effect
Definition
allele frequency of population determined by a small surviving population.
Term
describe the founder effect
Definition
a few individuals colonize a new habitat
Term
define gene flow
Definition
change in gene pool due to migration of fertile individuals or transfer of gametes between populations
Term
define mutation
Definition
introduction of new allele
Term
nonrandom mating
Definition
mates not randomly chosen, sexual selection
Term
describe natural selection as a cause of microevolution
Definition
differential reproductive success. some phenotypes better adapted to survive and reproduce
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