A change at the molecular level leads to a change in phenotype if the change happens in the DNA of organisms.
<h3>What is mutation?</h3>
It is a change to the genome of organisms.
A change to the DNA sequence of organisms may or may not manifest in the morphological appearance of organisms.
A change to the DNA sequence of organisms means that entire new proteins would be synthesized and only in this way can the phenotype of organisms be altered as a result of a change at the molecular level.
