Question

How can gene flow, genetic drift, and natural selection all influence macroevolution? Match the words in the left column to the appropriate blanks in the sentences on the right. Reset Help speciation natural selection in many A factor (such as the separation of continents by continentaldrift) that reduces groups of organisms promotes on a grand scale the evolution of new morphological forms can lead to the fixation of alleles, causing and promoting speciation gene flow as Adaptive evolution by at a wide range of loci is a major cause of well as the high rates of speciation that occur during adaptive radiation. reproductive isolation genetic drift

Answer 1

Gene flow increases the frequency of alleles and introduces new allele combinations. In this way, gene flow increases a population's genetic variability and aids macroevolution. Genetic drift also causes large changes in allele frequency and accelerates macroevolution.

In population genetics, gene flow is the transfer of genetic material from individual people to another. If the rate of deoxyribonucleic acid flow is extreme enough, therefore two populace will have equivalent allele frequencies and then maybe thought-out a distinct active population.

Genetic drift is the change in the repetitiveness of an existent deoxyribonucleic acid variant in a culture on account of haphazard chance. Genetic drift may cause deoxyribonucleic acid modifications to cease entirely and through reduce the ancestral difference. It can cause originally precious alleles to become much more repeated and even established.

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