Answer:
(C) genes
Step-by-step explanation:
The gene is nothing more than a specific DNA sequence that contains the instructions needed to synthesize a specific protein or RNA molecule. We can say that the gene is the fundamental unit of heredity, because that is where the code is for protein formation. Generally, genes with letters of the alphabet are represented.
All cells in a body have the same genes; however, in some cells, one type of gene is activated and another is deactivated, thus ensuring cell differentiation. It is worth noting that, in some cases, the gene is activated at all times, as they are fundamental for performing basic cell activities.