Ascientist discovers a microscopic, unicellular organism with no nucleus. which of the following correctly describes the organisms a. the organism is a plant b. the organism is an animal c. the organism is a prokaryote d. the organism is a eukaryote

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.