Which of the following is not a likely outcome of gene duplication?
A) Expression of one copy of the gene in a different pattern from that of the original gene
B) Mutations leading to acquisition of a novel function in one copy of the gene
C) Mutations leading to loss of function of one copy of the gene
D) Mutations leading to loss of function of both copies of the gene
E) None of the above

Question

Quizplus · Accepted Answer

Assuming that the original gene served an important function, at least one copy should be preserved to maintain that function. The additional copy is free to acquire mutations that could reduce or eliminate its function-indeed, gene dosage considerations might select for such mutations. However, mutations may result in an altered/novel function, particularly if the copy is regulated by different elements than the original gene and thus expressed in a distinct pattern.

Which of the Following Is Not a Likely Outcome of Gene