Question

How many sense codons code for $20$ known essential amino acids?

• A. $61$
• B. $62$
• C. $63$
• D. $64$

Answer 1

Answer: (A)

$61$

The essential feature of the genetic code is the strict one-to-one correspondence between codons and amino acids. The canonical code consists of three stop codons and 61 sense codons that encode 20% of the amino acid repertoire observed in nature

So, the correct answer is '61'61''