A classification system is shown below. Which characteristic places the king snake in a different class than the giant panda?: A: It is not a mammal

B: It does not have a spine

C: It eats other animals

D: It sheds its skin

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.