Which of the Following Statements About Group I and Group

Multiple Choice

Which of the following statements about group I and group II introns is NOT true?

A) Both group I and II introns form elaborate and characteristic secondary structures with loops.
B) The splicing mechanism of group II introns is similar to that of spliceosome-mediated nuclear pre-mRNA splicing.
C) The length of group I and group II introns is much longer than the exons within the structures.
D) Group I and group II introns are exclusively found in mitochondrial and chloroplast encoded genes.
E) Both group I and group II introns are both found in bacterial genes.