Which of the Following Is Not Likely to Occur After

Multiple Choice

Which of the following is not likely to occur after a gene duplication event?

A) One gene retains its function, while the other becomes a pseudogene.
B) Both genes retain their function, but they are expressed in different patterns or tissues.
C) Both genes become pseudogenes.
D) One gene retains its function, while the other evolves to have a new function.
E) All of the above are likely to occur.