You are presented with the question "what have regions that do not code for proteins?" and the following answer choices: 
- genus
 - barnacles
 - graptolites
 - roots
 - ferns
 - animals
 - eukaryotes
 - sensory neurons

Now knowing that introns are regions that do not code for proteins and introns are found in eukaryotes, choose the best answer.


 

       eukaryotes  