Gene that codes for a protein that ordinarily suppresses the cell cycle; inactivity due to a mutation can lead to a tumor.
What will be an ideal response?
tumor suppressor genes
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Which of the following statements is TRUE when comparing the myosin gene between a rat and a mouse?
A. The nucleotide sequences are identical. B. The genes encode for different proteins. C. Each species has accumulated random mutations, but the sequences are similar. D. Both species are so far apart that there is no homology between the two sequences. E. The genes encoding myosin closely resemble those encoding actins.
An enzyme’s specificity is based on
a. the shape of its active site. b. the amount of activation energy it requires. c. the number of amino acids in its structure. d. the nature of its cofactors. e. none of these.
Species in widely separated but similar biomes often appear to display similar characteristics because of
A) convergent evolution. B) coevolution. C) mutations. D) evolutionary drift.
Which of the following compounds produces carbon dioxide during the breakdown of glucose in aerobic respiration?
a. phosphoglycerate b. pyruvate c. ATP d. NADH e. fructose bisphosphate