Genetics: Analysis and Principles 5th Edition by Robert Brooker

Exercise 16

With regard to gene duplications, which of the following statement(s) is/are correct
A) Gene duplications may be caused by nonallelic homologous recombination
B) Large gene duplications are more likely to be harmful than smaller ones
C) Gene duplications are responsible for creating gene families that encode proteins with similar and specialized functions
D) All of the above statements are correct.