You are presented with the question "What does changes in the structure of the Y chromosome do?" and the following answer choices: 
- reproduce
 - Male infertility
 - harm them
 - bending light rays
 - It expands
 - allow growth
 - Plant growth is reduced
 - Damages them

Now knowing that mutations may change the structure of a chromosome or just change a single nucleotide and mutations in genes on the Y chromosome have been implicated in male genetic infertility, choose the best answer.


 

  Male infertility       