The color of a flower is controlled by two alternative alleles at a single locus, r (red) and r (white). if an individual has the rr alleles, it is considered to be

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