Same chapter3 marksDifficulty: Medium
What is the lac operon, and how is it regulated?
Molecular Basis of Inheritance
3 marksDifficulty: Medium
What are the characteristics of the genetic code?
Original Khojo Papers practice question — not from a past board paper.
Answer
The code is a triplet code, read three bases at a time. It is degenerate, since most amino acids are specified by more than one codon, but it is unambiguous, since each codon specifies only one amino acid. It is read continuously with no commas, it is non-overlapping, and it is nearly universal. AUG is both the initiator codon and the codon for methionine, and UAA, UAG and UGA are stop codons.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Sixty-one of the sixty-four codons code for amino acids.
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