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Together, genetic mutation and natural selection determine in what 'direction' evolution proceeds.
Disruptive selection
natural selection, genetic drift, genetic mutation studyisland
Natural selection can only work on genetic variation that already exists. So mutation comes first, then natural selection.
It is a mutation.
mutation,gene pool,natural selection,genetic drift
genetic drift, gene flow, mutation, natural selection and nonrandom mating ( sexual selection ).
gene flow , genetic drift , mutation , natural selection , sexual selection.
genetic drift, mutation, natural selection, and migration
Mutation, Natural Selection, Migration, and Genetic Drift.
Mutation.
mutation