Which example describes microevolution?
A) Birds evolved from dinosaurs.
B) Lions and tigers evolved from a common cat-like ancestor.
C) HIV evolved resistance to antiviral medications.
D) Land plants evolved from algae.
C
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Rh incompatibility is due to an immune reaction in a pregnant woman to which of the following?
A. a self-antigen on red blood cells B. a foreign antibody on red blood cells C. a foreign antigen on red blood cells D. a self-antibody on red blood cells E. None of the answer choices is correct.
After three replications of a single DNA molecule,
what percent of the resulting molecules contain one strand of the “original” DNA? a. 0 percent b. 25 percent c. 50 percent d. 75 percent e. 100 percent
The main role of the central vacuole in plant cells is to
A) store glycogen for seed growth. B) synthesize and store proteins. C) digest trapped food particles. D) catalyze photorespiration in association with chloroplasts. E) maintain turgor pressure in plant tissue.
The genomes of all the microbes present in or on the human body are collectively known as the proteome
a. True b. False