試題詳解

38. When a segment of DNA duplicates, causing two or more copies of a gene to be present in the chromosome, the most unlikely fate of the duplicate(s) would be
(A) to lose function in subsequent mutation.
(B) to improve function in subsequent mutation.
(C) to gain a new function in subsequent mutation.
(D) to become a pseudogene.
(E) to become part of a gene family.