Hybrid organisms frequently die as embryos or at an early age, a phenomenon called hybrid breakdown
a. True
b. False
ANSWER: False
Biology & Microbiology
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Behavior that is entirely controlled by genes and has no learning component is
(a) learned. (b) habituated. (c) instinctive. (d) classically conditioned.
Biology & Microbiology
A group of proteins with actions including antiviral activity are the:a
tumor necrosis factors. b. chemokines. c. complement systems. d. interleukins. e. interferons
Biology & Microbiology
Approximately ____ Y-linked genes have been discovered
a. 10 b. 20 c. 60 d. 80 e. 120
Biology & Microbiology
A rise in sodium levels and extracellular
volume leads to a rise in blood pressure. As a result, a. renin levels rise, but aldosterone levels fall. b. renin levels fall, but angiotensin levels rise. c. renin and aldosterone levels all rise. d. renin and aldosterone levels all drop. e. none of these occur
Biology & Microbiology