Question

Christy Turner's extensive research on variability in the crown and root areas of human teeth found:
a. That pre-contact North American Indian teeth are less similar to pre-contact South American Indian teeth than they are to pre-contact Eskimo and Aleut Indian teeth.
b. That the teeth of all North and South American Indians are remarkably similar, suggesting a single migration from northern Asia at the end of the last Ice Age.
c. That modern and pre-contact American Indian teeth are most similar to the teeth of northern Asians, and that three major Native American groups could be identified, suggesting at least three migrations.
d. No similarity between the teeth of modern and pre-contact American Indians and the teeth of people from northern Asia.

Answer

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