The study of the cell is called cell biology.
The correct answer is C.
In an organism, the expression of the character is due to the formation of the protein molecule in the body which shows its effect.
Protein is formed by the amino acid and the information stored to code the amino acid is in RNA.
Hence, DNA is converted into RNA for the formation of protein and it is also a checkpoint to avoid the mutation.
Hence, the correct answer is C.
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