Question

Select the true statement. A. RNA is mostly single-stranded; DNA is always double-stranded. B. RNA and DNA usually have identical intravenous bases. C. Several types of DNA help regulate protein synthesis.

Answer 1

A. RNA is single-stranded and DNA is always double-stranded
this is the correct answer, hope this helps. it cant be B because RNA mutates before forming DNA, and protein helps with protein synthesis, so not D