black_tulip
Forum Senior
Topics: 14
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Genetic drift is a mechanism of evolution that acts in concert with natural selection to change species characteristics over time. Like selection, it acts on populations, altering which traits and which alleles predominate among members and changing the diversity of the group. Unlike selection, however, drift occurs only in small populations and results in changes that need not be adaptive. A statistical effect, it arises from the role of chance in the production of offspring.
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| Malaysian
Forum Guru
Topics: 28
Posts: 778
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Is founder's selection(I think its called this terminology) a type of genetic drift??
Isn't genetic drift seen in HIV virus and also influenza virus......is the above mentioned concept the same for the microorganisms??
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| mjl1717
Forum Hero
Topics: 955
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drift-minor antigenic change from mutation
As said above think of hiv and influenza
shift-major new genetic combinations are produced through "shuffling"
resulting in stable and dramatic changes.
Also 2 different strains of RNA viruses affect the same cell.
I think of it as when your driving and you drift into another lane (minor change) versing shifting and making a complete U turn major change.
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| Malaysian
Forum Guru
Topics: 28
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actually black tulips definition still holds water because in High Yield Mol. Biology the defition is similar to his..........thats why I'm confused???
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