6. In the table below, estimate the lengths of
DNA fragments in each lane. Lane 8 has your
marker and the lengths are written on the right.
1
2
3
4
5
6
7
8
Sample
DNA Fragment Sizes
2000
1000
800
U
Bethany Lau 2014
3

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.