A part of the promoter, called the TATA box, is said to be highly conserved in evolution. Which might this illustrate? a. The sequence evolves very rapidly. b. The sequence does not mutate. c. Any mutation in the sequence is selected against. d. The sequence is found in many but not all promoters. e. The sequence is transcribed at the start of every gene.

Question

Anya Fletcher

Biology

22 December, 09:17

A part of the promoter, called the TATA box, is said to be highly conserved in evolution. Which might this illustrate? a. The sequence evolves very rapidly. b. The sequence does not mutate. c. Any mutation in the sequence is selected against. d. The sequence is found in many but not all promoters. e. The sequence is transcribed at the start of every gene.

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Answers (1)

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Christopher Hutchinson · Answer 1

c. Any mutation in the sequence is selected against.

Explanation:

When a gene sequence is said to be highly conserved during evolution, it means that it has a low rate of mutations and mutations in this sequence are not favored by the evolutionary forces. Evolutionary forces such as natural selection favor the organisms with the non-mutated sequence. Since the promoter sequence TATA box is highly conserved, evolutionary forces do not favor the phenotypes having mutations in this sequence. On the other hand, the organisms having the wild type TATA box sequence are favored during evolution.