試題詳解

29. 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 become part of a gene family.
(C) to gain a new function in subsequent mutation.
(D) to become a pseudogene.
(E) to improve function in subsequent mutation. DNA repair.