Q. Choose the incorrect option :
1. Six codons do not code for any amino acid.
2.Codon is read in mRNA in a contiguous fashion.
3.Three codons function as stop codons.
4. The initiator codon AUG codes for methionine .
(a) 1, 2 and 4 are wrong.
(b) 1, 2 and 3 are wrong.
(c) 2, 3 and 4 are wrong.
(d) 1 alone is wrong.
Solution :
Correct option : D There are three codons that do not code for any amino acid called the stop codons. They are UAG, UAA, UGA. Hence the statement 1 is incorrect .Genetic code is a triplet codon that means three RNA bases codes for an amino acid. The codon AUG codes for methionine and is called the start codon.
