Read each example and identify it with one of the mechanisms that influence gene pools. A zebra migrates to join a different herd of zebras. Competition for sunlight leads to taller trees. The DNA of


Read each model and identify it after a while one of the mechanisms that govern gene pools. A zebra migrates to adadjoin a incongruous herd of zebras. Competition for sunlight leads to taller trees. The DNA of a snake changes to fabricate its malice stronger. A grassfire randomly sweeps through a population of buffalo and kills most of the animals.