Repressor proteins do not __________________.
A. prevent binding of RNA polymerase to DNA
B. cause the DNA regions that contain the operator to twist or loop
C. inactivate operon genes when their products are not required
D. bind to sets of operators
E. increase transcription rates
Answer: E
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The ability of the eye to focus at close distances by becoming more rounded as the ciliary muscles contract is called visual _____.
Fill in the blank(s) with correct word
The famous Greek philosopher Aristotle could be thought of as a taxonomist since he sorted organisms into groups based on a set of shared traits.
Answer the following statement true (T) or false (F)
Gene frequencies will NOT change in a population if certain conditions are met, such as if
A. all organisms mate randomly. B. there is no migration. C. there is no mutation. D. All of these answers are true.
Which of the following is an example of Scala Naturae?
a. Minerals rank below plants, plants below animals, animals below humans, and humans below the gods. b. Mosses rank below ferns, ferns below flowering plants, flowering plants below bushes, and bushes below trees. c. Cars rank below buses, buses below trucks, trucks below cars, and buses below airplanes. d. Blood cells rank below blood liquid, blood liquid below lymph, lymph below connective tissue, and connective tissue below skin