g Riboswitch is a mechanism of gene activity regulation by mRNA conformation. Riboswitch can regulate .

c. both transcription and translation

Explanation:

Riboswitchs are mRNA elements that influence the activity of genes certain genes by regulating same and are found in other organisms apart from humans such as bacteria, plants and fungi.

They regulate activity by binding to specific small molecules known as ligands thus causing a structural rearrangement that enables either transcription or translation to be modulated in the gene.

it would lead to upper respiratory infections and pneumonia.