Mutations may change the structure of a chromosome or just change a single nucleotide, and nucleotides are the building blocks of DNA . Given these facts, mutations may change the structure of the what of DNA among the following options:
- personalities
 - mutations
 - solid, liquid, gas
 - building blocks
 - gastropod shells
 - Veins and arteries.
 - hosts
 - an organism's body


 

    building blocks     