Question

Gene and cistron words are sometimes used synonymously because

• A. One cistron contains many genes.
• B. One gene contains many cistrons.
• C. One gene contains one cistron.
• D. One gene contains no cistron.

Answer 1

The correct option is C One gene contains one cistron.

Cistron is defined as DNA segment that carries the genetic code for a single polypeptide and therefore functions as a hereditary unit. Since, each gene specify a specific polypeptide, each gene is said to contain one cistron. Option C is the correct answer.