Question 11
2 pts
If a corn plant has a genotype of Ttyy, what are the possible genetic combinations that could be
present in a single grain of pollen from this plant?
Ty, ty, TY, TY
Ty, Ty, TY, TY
Ty, Ty, tyty
OTY, TY, ty, ty

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.