Amutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring, and animals that reproduce sexually produce sex cells, or gametes. Given these facts, a mutation in the _ of a parent can cause a new trait to appear in the parent 's offspring among the following options:
- eggs
 - courtship
 - mitochondria
 - alleles
 - pollen
 - gametes
 - ATP
 - hormones


 

      gametes   