How many different kinds of polypeptides, each composed of 12 amino acids, could be synthesized using the 20 common amino acids?
A) 4¹²
B) 12²⁰
C) 240
D) 20
E) 20¹²

Question

Quizplus · Accepted Answer

There are 20 options for each position in the polypeptide chain and 12 positions, so the total number of possibilities is 20 x 20 x 20... (12 times) which is equal to 20¹².

How Many Different Kinds of Polypeptides, Each Composed of 12