Generations of scientists have debated whether the Neandertals were ancestral to modern Europeans. The current prevailing view, which denies that ancestry, proposes that
A. Neandertals died out because they retained too many australopith characteristics that were poorly adapted to northern latitudes.
B. Neandertals migrated eastward through Siberia and into the Americas until they died out.
C. H. erectus killed off the Neandertals even prior to the emergence of anatomically modern humans.
D. H. erectus split into separate groups, one ancestral to the Neandertals, the other ancestral to anatomically modern humans, who first reached Europe around 100,000 B.P.—long before Neandertals.
E. modern humans evolved in Africa and eventually colonized Europe, displacing the Neandertals there.
Answer: E
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H. erectus skulls __________
a. have thick bones b. are wider than they are long c. have a high forehead d. smaller than those of H. habilis
Genetic equilibrium is maintained in a gene pool under ideal conditions. This equilibrium is disturbed by:
A. gene flow B. random mating C. lack of natural selection D. all of these
Most modern studies of primate behavior are __________
a. field studies b. semi-free-ranging studies c. performed in captivity d. performed in a laboratory
Which of the following describes the possible ancestor to the genus Homo?
a. The ancestor was highly specialized. b. The ancestor was more derived than potential descendants. c. The ancestor lived contemporaneously with descendant groups. d. The ancestor had characteristics that developed further in descendant groups.