An intervening sequence is
A) more stable than coding sequences during evolution.
B) found only in beta and delta genes of globin.
C) absent or lacking in some eukaryotic genes.
D) always A-T rich.
E) always shorter than that of a coding sequence.

Question

Quizplus · Accepted Answer

Intervening sequences, also known as introns, can be absent or lacking in some eukaryotic genes. This is particularly true for prokaryotic genes, which do not contain introns at all.

An Intervening Sequence Is