A Pseudogene Is a

A pseudogene is a

A) second copy of a gene that functions when the original copy becomes damaged.
B) gene that is unrelated in sequence to another gene but has the same function.
C) gene that arose through gene duplication, but after acquiring mutations became nonfunctional.
D) gene that evolved by gene duplication and the acquisition of mutations to yield a gene product that has a slightly different function from that of the original gene product.