Biology, 25.10.2019 20:43 guzmangisselle
What is meant by the statement "evolution may proceed along 'genetic lines of least resistance'"?
(a)- evolution operates on the set of phenotypes that a genotype can produce under all possible environmental conditions.
(b)- the phenotypes produced by genes under selection will be those that require the least energy input, despite potential fitness gains.
(c)- characters with little genetic variation will constrain the rate of natural selection; correlated characters may increase in fitness less rapidly, because they can evolve only along the greatest axis of variation. because mutations may be more likely to appear at some locations in a gene than at others, we can easily predict the phenotype it will experience when natural selection occurs.
(d)- functionally correlated characters will not remain genetically correlated, because they are broken up during segregation and crossing over.
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What is meant by the statement "evolution may proceed along 'genetic lines of least resistance'"? <...
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