What is one type of cell division that produces an exact duplicate of the nucleus of the cell?

Explain two reasons you think it is important for scientists to search for new ways to treat cancer

Diagram of the evolution of land plants?

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.