Question

Most eukaryotic mRNAs are shorter than the genes that encode them. The reason for this is __________.

A. that exons are spliced out of the hnRNA
B. that introns are spliced out of the DNA
C. that eukaryotic genes contain both introns and exons
D. the addition of the poly-A tail to the genomic DNA

Answer 1

i remember its B !!!!