Why Are Met and Trp Codons Often Used to Design

Multiple Choice

Why are Met and Trp codons often used to design DNA probes from amino acid sequences?

A) They are not degenerate and have single codons.
B) Met is the first amino acid in the protein chain.
C) Both are used often in proteins.
D) They always occur together in protein sequences.
E) None of the answers is correct.