What is meant by “redundancy” in gene expression?
(A) all tRNA molecules can carry more than one amino acid
(B) each amino acid can have more than one codon
(C) one codon can code for more than one amino acid incorrect
(D) mRNA is copied twice in the nucleus
(E) none of these are true
Answer: (B) each amino acid can have more than one codon
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What naturally occurring process is responsible for keeping the earth warm enough to sustain life?
A. Oceanic currents B. Decomposition C. Greenhouse effect D. Wildfires E. Atmospheric circulation
Ecologically mud flat areas are a focal area of:
a. nutrient recycling. b. primary production. c. tertiary consumers. d. nutrient sink. e. sessile epifauna.
The meninges are composed of:
a. bone and dura mater only. b. dura mater and arachnoid only. c. arachnoid and pia mater only. d. dura mater, pia mater, and arachnoid only. e. bone, dura mater, pia mater, and arachnoid.
What is the best explanation for a BbCc × bbcc cross producing offspring in a 5:5:1:1 phenotypic ratio?
A) linked genes B) polygenic inheritance C) incomplete dominance D) codominance