Given below are two statements: Statement I: The codon 'AUG' codes for methionine and phenylalanine. Statement II: 'AAA' and 'AAG' are both codons that code for the amino acid lysine.
In light of the above statements, choose the correct answer from the options given below:
Statement I is correct but Statement II is incorrect.
Statement I is incorrect but Statement II is correct.
Both Statement I and Statement II are correct.
Both Statement I and Statement II are incorrect.
According to the text regarding the genetic code, the codon AUG has dual functions: it acts as the initiator codon and codes for Methionine (Met), not Phenylalanine (which is coded by UUU and UUC). Therefore, Statement I is incorrect. The code is degenerate, meaning some amino acids are coded by more than one codon; AAA and AAG are indeed the codons that code for the amino acid Lysine. Thus, Statement II is correct.
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