Historically, the work of Charles Darwin and others described the larger picture of evolution. Since then, evolutionary and molecular biologists have attempted to find examples in the wild (as compared to a laboratory setting) that make connections between genetic variation and the processes of natural selection and genetic drift. How does this stickleback study help make these connections

Respuesta :

Genetic variation is hard to be associated with evolution because most genetic variation is neutral. It means that most genetic variation occurs in non-coding regions.

Evolution and genome

Evolution refers to descendence with modification, which is mainly due to the differential process of natural selection.

Genetic variation is a prerequisite for evolution to occur, but that variation should (ideally) be localized in protein-coding regions.

It has been proposed that genetic variation in non-coding DNA regions can not modify the phenotype: however, an increasing body of evidence is showing that this assumption is not correct.

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