You are interested in a particular gene that you have named LLT (low-light tolerance). What is the frequency of this allele in the population described in question 21.1.1?

A. 0.5
B. 1.0
C. 0.0
D. Need more information


B

Biology & Microbiology

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Zhang and Cech’s experiments confirmed which feature of ribozyme activity?

a. Ribozymes inhibit rates of biological reactions. b. Ribozymes catalyze formation of bonds between amino acids in protein synthesis. c. Ribozymes catalyze formation of the fundamental linkage tying nucleic acids to proteins. d. Ribozymes can link nucleic acids together even if their proteins are removed. e. Ribozymes provide a possible solution to the question of whether proteins or nucleic acids appeared first in evolution.

Biology & Microbiology

Mutations may be caused

a. during replication. b. by transposable elements. c. by UV light and X-ray radiations. d. during transcription. e. by all of these

Biology & Microbiology

Which of the following is (are) responsible for the

movement of nutrients upstream? a. migratory fish and other animals b. phytoplankton c. bacteria d. leaching e. all of these

Biology & Microbiology

Populations of different species comprise a(n) ____

a. populations b. biosphere c. ecosystem d. community e. evolution

Biology & Microbiology