Which part of a mRNA molecule is edited out?

A) exons.
B) introns.
C) transposons.
D) inducers.
E) promoters.

mRNA Molecule

Messenger RNA, a type of RNA that conveys genetic information from DNA to the ribosome, where it specifies the amino acid sequence of the protein products of gene expression.

Introns

Non-coding sequences of DNA within a gene that are removed by RNA splicing during the maturation of the final RNA product.

Exons

Regions of a gene that code for proteins and are expressed in the RNA.