12.What will you find if you compared the DNA sequence of a gene with the sequence of the
mature mRNA that was transcribed from the gene? (A) The mRNA is shorter because each
codon of three bases encodes only one amino acid; (B) The mRNA is shorter because it does
not contain introns; (C) The mRNA is longer because each codon of one amino acid encodes
three bases; (D) Both are the same length.