In humans, a dominant allele controls the formation of a cleft chin, a Y-shaped fissure in the chin caused by an atypical bone formation in the mandible (this phenotype
is also known as a chin dimple). A survey of 1200 college students found that
108 of them did not have a cleft chin. What was the frequency of heterozygotes in
that student population?

Many archeologists and anthropologists disagree with dr. thorne's view.  thorne strongly believes that what many calls "homo erectus"  was in fact  homo sapiens,  and that they migrated out of africa almost 2 million years ago and dispersed throughout europe and asia. that's way different  from what scientists have always believed about the evolution of the species.

Yes yes yes very good