The variation that exists in a population of wild giraffes is usually the result of events that occur during

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of