A revolution in the study of human evolution is under way thanks to the invention of techniques that enable DNA sequencing of not only modern humans, but also ancient humans.
Modern humans (Homo sapiens) and archaic humans called Neanderthals (H. neanderthalensis) shared a common ancestor in Africa but diverged in different geographic areas. When modern humans migrated out of Africa and dispersed around the world starting about 100,000 years ago, they overlapped with Neanderthals in Europe. This scenario is best described as
a. species living in sympatry following allopatric speciation
b. species living in sympatry following sympatric speciation
c. species living in allopatry following allopatric speciation
d. species living in allopatry following sympatric speciation
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Master Proteins with a bite sized video explanation from Jason Amores Sumpter