Which of the following best characterizes the function of introns?
A) They always serve as enzymes during gene mutation.
B) They serve as spacers only in prokaryotic cells.
C) They frequently function as spacers and rarely function as splicing enzymes.
D) They always code for proteins and are never spliced by ribozymes.

Question

Quizplus · Accepted Answer

Introns can function as spacers between exons in the pre-mRNA and are often removed by splicing enzymes called ribozymes. However, some introns have been found to also have functional roles in gene regulation and alternative splicing, indicating that they can serve more than just a spacer function. Introns do not code for proteins and are not typically considered enzymes themselves.

Which of the Following Best Characterizes the Function of Introns