What is a possible effect of crossing animals that belong to different species? a) such a mating is not possible. b) it will cause genetic disorders. c) it can reduce genetic variation. d) it can produce infertile offspring.

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?