Muscles cells contract as actin filaments slide across the surface of myosin filaments, causing the ends of the muscles cell to pull together. this process requires energy in the form of ATP. which process explains how energy is made available for muscle contraction

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.