All humans alive today have inherited their mitochondrial DNA from some individual female common ancestor. Studies indicate this woman probably lived about ________ years ago, when fossil evidence indicates that Homo sapiens was restricted to ________
A) 20,000; Africa
B) 50,000; Africa and Asia
C) 180,000; Africa
D) 500,000; Africa, Asia, and Europe
Answer: C
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Which of the following best describes the relationship between DNA, proteins, and RNA?
a. DNA is transcribed into RNA, then RNA is translated into proteins. b. DNA is transcribed into proteins, then proteins are translated into RNA. c. DNA is translated into RNA, then RNA is transcribed into proteins. d. DNA is translated into proteins, then proteins are transcribed into RNA
The chromosome pair listed that does NOT correlate with either male or female (under normal circumstances) is ________________.
Fill in the blank(s) with the appropriate word(s).
What are the semicircular canals?
A. the internal part of the cochlea with hair cells that are stimulated by sound waves B. the part of the inner ear that recognizes rotational equilibrium and movement C. the point of the eye at which color vision is most acute D. the part of the choroid coat of the eye that is attached to the lens and the iris E. the part of the eye that contains rods, cones, and bipolar cells
Which of the following is NOT related to genetic drift?
A. Bottleneck effect B. Neutral variation C. Non-Darwinian evolution D. Founder effect E. Sexual selection