While studying amino acid sequence of a protein, it is found that organisms A and D has the least difference.
Amino acids are proteins that are linked through a peptide bond. Translation helps in obtaining protein from RNA. DNA determines amino acids sequence through transcription and translation. And it codes RNA by the process of transcription.
So organisms A and D has the least difference (1 amino acid sequence difference) and more related with each other as compared to organism B and D.
Therefore, option C aptly describes the statement.
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