Some of your DNA may not code for any protein and has no known function in gene regulation; it is sometimes referred to as noncoding DNA. How do nucleotide sequences of "noncoding DNA" evolve?
A) They evolve through natural selection.
B) They evolve through genetic drift and other chance processes.
C) They evolve to be more useful by taking on new functions.
D) They evolve by gradually being eliminated from the gene pool.

Question

Quizplus · Accepted Answer

Noncoding DNA sequences are not under selection pressure for their function, so they are more likely to evolve through random genetic drift and other chance processes. This can result in mutations or deletions that accumulate over time without affecting the survival and reproduction of the organism. Some noncoding DNA sequences may also evolve through neutral evolution, where mutations have no effect either positively or negatively on the survival and reproduction of the organism.

Some of Your DNA May Not Code for Any Protein