The study of population genetics, specifically the frequency of alleles, genotypes, and
phenotypes focuses on what aspect of evolution?
A.macroevolution
B.natural selection
C.microevolution
D.non-random mating
E.mutation
The combination of ancestral Homo erectus traits, such as a sagittal ridge, with more
modern features in Chinese premodern fossils has been interpreted as evidence for:
A.classifying these skeletons as a regional variant of Homo heidelbergensis
B.the evolution of anatomically modern humans from earlier Homo erectus in east Asia,
rather than Africa
C.substantial genetic continuity between modern and Homo erectus populations in
China
D.all of the above
E.only A and B
The change in relationship between humans, animals, and plants whereby they share a
mutually beneficial association is known as: