Researchers have recently sequenced the genetic identities of nine ancient fully modern H. sapiens from sites in Italy, France, the Czech Republic, and Russia. What did this research focus on?
a. the Y chromosome
b. mtDNA
c. the ABO blood groups
d. the Y chromosome and the ABO blood groups
e. only cranial remains
Question 2
Which of the following has not been proposed as a model to explain the origin of modern Homo sapiens?
a. An origin in Africa followed by migration to other areas where indigenous premodernpopulation s were replaced.
b. An origin in Africa followed by migration to other areas where both interbreeding andreplacement occurred.
c. Several origins in different areas where modern forms evolved from local populations.
d. Separate origins in Africa and Australia with migrations from both these areas to displace allother populations.
e. A strong influence of modern humans evolving first in Africa that left an imprint on populations throughout the world that is detectable today.
Natural selection acts on genetic variation
Roberts syndrome is a genetic disorder
Modern door design
Modern-day dust cloud blowing from Africa’s Sahara
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Australia's spiny anteater, one of only three modern species of monotremes