1. which beaker is the student's control? 2look at the above figure. if the student later tested the bubbles collected in the test tube, what would she find they are made of? how do you know?
3. Look at the above figure. at what distance from the light source was the greatest number of bubbles produced?
4. look at the graph in the above figure. what do the student's data show?

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.