A part of the promoter, called the TATA box, is said to be highly conserved in evolution. Which of the following might this illustrate?

A. The sequence is transcribed at the start of every gene.
B. Any mutation in the sequence is selected against.
C. The sequence does not mutate.
D. The sequence is found in many but not all promoters.
E. The sequence evolves very rapidly.


Ans: B. Any mutation in the sequence is selected against.

Biology & Microbiology

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