If creationism were true, wouldn’t that mean that no animal species could be related to another? And DNA would be varied from species to species showing no relationship at all. Every species would be related only to itself, having come from no common ancestor. Horses would not be related to zebras, wolves to coyotes, polar bears to grizzly bears, or llamas to camels. Tigers and lions could not be related, and would be incapable of cross-species reproduction. There would be no ligers or tigons. That applies to plants as well. We would be unable to cross-pollinate two different plants to come up with a hybrid.