You are presented with the question "what changes sex cells?" and the following answer choices: 
- copying
 - growth
 - clams
 - mutation
 - coded genes
 - transposing
 - hormones
 - cancer

Now knowing that amutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring and traits are initiated by mutation and recombination, choose the best answer.


 

    mutation     