<prompt> How many base pairs are encoded by a prokaryotic polypeptide of 250 amino acids?250 bp500 bp750 bp1000 bp  <response>: A prokaryotic DNA does not contain any introns and the base sequence is exactly collinear with the amino acid sequence of proteins. Each amino acid is represented by a 3 base codon, therefore 250 amino acid protein will require 750 base pairs 250 x 3 750. 