Which of the following introns have self-splicing activity?
(a) Group I and group II
(b) Group II and group III
(c) Group III and group IV
(d) Group I and group III
I had been asked this question by my school principal while I was bunking the class.
This intriguing question comes from RNA-Dependent Synthesis of RNA and DNA in chapter DNA, RNA and Protein Metabolism of Biochemistry