Question

In which of the following cases the first base of anticodon pairs with two codons?

(a) When the first base of anticodon is A or C

(b) When the first base of anticodon is A or G

(c) When the first base of anticodon is inosine

(d) When the first base of anticodon is G or U

The question was asked in class test.

This interesting question is from The Genetic Code topic in division DNA, RNA and Protein Metabolism of Biochemistry

Answer 1

The correct option is (d) When the first base of anticodon is G or U

To explain: When the first base of the anticodon is G or U, base pairing is less specific and two different codons may be read.