All of the following traits are common in deep-sea creatures EXCEPT

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.

Which of the following explains why a tree is often used as a model to represent the principle of common descent

The sea slug that considered to be a photosyntheesizing animal