any of a number of organized or specialized structures within
a living cell.

What best explains the inability for life to exist in earth early atmosphere

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.

Explain how mendel kept his pea plant from self pollination