Work Step by Step
Option a. is incorrect. RNA is single-stranded and does not contain thymine. Option c. is incorrect. RNA is shorter than DNA and only uses four bases. Option d. is incorrect. RNA synthesis occurs in the nucleus, but the strand of RNA does not stay in the nucleus; it travels to the ribosomes for translation to occur. Option b. is correct. RNA consists of a single strand and contains the base uracil instead of thymine.