We know from several studies and examples that populations
differ across space. Often, these differences create a cline. In
the mosquito Anopheles gambiae, there is a latitudinal cline
related to two different chromosomal inversions on the left
and right arms of chromosome 2 (Cheng et al. 2012).
Interstingly, the Fst values for the non-inverted DNA and the
2Rb inversion is fairly low across the cline, but the Fst values
for the 2La inversion is fairly high. Based on what you have
learned in this class, what does this indicate regarding the
evolution of the genome for this species in relation to the
cline? Also, what is a possible reason the 2Rb inversion
shows a lower Fst than the 2La inversion?