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GENETIC DRIFT exam questions and answers
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GENETIC DRIFT exam questions and answers
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GENETIC DRIFT examquestions and answers
WHAT ARE THE Sources of Genetic Variation? - answer Mutation
generates genetic variation
Epigenetic modification changes expression of genes
Genetic Drift causes fluctuations in allele frequencies and can
reduce genetic variation
Can act as a Homogenizing force
How does the referred term can act as homogenizing agent?
A population could go out of HW equilibrium with a lot of __________ -
answer Migration
(If two populations are different, migration between them can
reduce the differences)
Migration
Impact of Migration - answer ■ Immigration: could introduce
genetic variation into a population ■ Emigration: could reduce
genetic variation in a population
proponent of genetic drift - answer Sewall Wright (1889-1988)
, Sewall Wright worked on _________ (e.g. cows), and was consequently
interested in _____, _______________
Sewall Wright regarded _____ and_______ as particularly important
genetic mechanisms - answer agricultural stocks
small, inbred populations
Inbreeding; Inbreeding
Genetic Drift and Inbreeding could generate ________ interactions
These ______ interactions (epistasis caused by new recombinations)
are the main substrate for selection - answer new gene
Emphasis on Genetic Drift resurged in the 1970s, 80s with Kimura's
"____________"
Motoo Kimura's book - answer Neutral Theory
"The Neutral Theory of Molecular Evolution"
Observations of amino acid changes that occurred during the
divergence between species, show that molecular evolution
(mutations) takes place at a roughly constant rate. - answer
Molecular Clock
The Neutral theory posits that...,
________ or ( ______) acting to remove deleterious mutations from the
genome. - answer vast majority of evolutionary change at the
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