One source of random variation by which natural selection relies upon is changes in what?

One source of random variation by which natural selection relies upon is changes in what?


a.Survival of the fittest


b.Natural selection


c.Artificial selection


d.Genes








Farmers change the gene pools of domestic animals and cultivated crops by what?


a.Specialized niches


b.Artificial selection


c.Natural selection


d.Survival of the fittest








Thanks soooo much!

One source of random variation by which natural selection relies upon is changes in what?
1. D - the first three are all mechanisms of change in species, not a source of variation. Or rather, they are not sources of variation, but ways in which variation can lead to change.





2. B - It is artificial because it has been selected by a conscious entity (people) rather than unconscious (nature)
Reply:d. Or mutation! which sounds cooler!


and b.
Reply:DO


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