A behavior that has a genetic basis is subject to evolution by __________. Fill in the blank(s) with the appropriate word(s)
natural selection
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Which of the following is incorrectly paired?
a. Giardia lamblia—eukaryotic protozoan b. ringworm—eukaryotic animal c. influenza—virus d. cholera—bacterium
To test the hydrogen-bond hypothesis for reduced affinity of the heme group for carbon monoxide
when the heme is associated with polypeptide chains, the researchers used which of the following model systems?
a. Mutated rat myoglobin. b. Mutated rat hemoglobin. c. Myglobin gene isolated from a bacteria and introduced into sperm whale. d. Myglobin gene isolated from a sperm whale and introduced into a bacteria. e. Hemoglobin gene isolated from a sperm whale and introduced into a bacteria.
Where does the initiator protein bind DNA at the start of replication?
A) At a replication fork B) At an origin of replication C) At any AT-rich region D) At a promoter region E) At a start codon
Chordates can be characterized as having
A. bilateral symmetry. B. a notochord. C. a nerve cord. D. All of the choices are correct.