In a Eukaryote, Which of the Following Describes the Most

Multiple Choice

In a eukaryote, which of the following describes the most likely outcome when gene duplication occurs in one member of a gene pair?

A) creation of a pseudogene or a gene with a new function
B) creation of an operon that uses common regulatory elements
C) addition of an intron in the original gene
D) nondisjunction of that chromosome during the next round of cell division.