Ans. (D) If errors are not removed from areas with a gene, then the resulting proteins could be affected.
DNA replication involves synthesis of replicas (exact copies) of DNA molecule, at the time of cell division.
DNA contains information for the protein synthesis in the form of triplets of nucleotides, called as codons. It transfers this information to the mRNA and mRNA used this information to code polypeptide chain or protein.
If an error, occurred during DNA replication gets not repaired, it would alter the sequence of DNA. The mutated DNA would transcribe altered mRNA that would code for a mutated or altered protein.
Thus, the correct answer is option (D).
