contestada

Which statement describes an operon? heritable changes in gene expression that occur without altering the DNA sequence the processing of exons in mRNA that results in a single gene coding for multiple proteins a gene cluster controlled by a single promoter that transcribes to a single mRNA strand mRNA modifications, such as the addition of a 5′ ‑cap and 3′ poly‑A tail and the removal of introns protein modifications such as the addition of a functional group, or alternate folding of the protein