Question

what are the variation evidence of factor evolution

Answer 1

A single mutation can have a large effect, but in many cases, evolutionary change is based on the accumulation of many mutations. Gene flow is any movement of genes from one population to another and is an important source of genetic variation. Sex can introduce new gene combinations into a population.


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Answer 2

Five types of evidence for evolution are discussed in this section: ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA, and similarities of embryos. Another important type of evidence that Darwin studied and that is still studied and used today is artificial selection, or breeding.



Ancient Organism Remains

Fossil Layers

Similarities Among Living Organisms

Similarities of Embryos