A mutation in a bacterial gene which codes for the enzyme which cross-links peptidoglycan with the result that the altered enzyme continues to cross-link the peptidoglycan but no longer recognizes penicillin. True/False

TRUE

Explanation:

These kind of mutations in the bacterial genome will lead to the phenomenon of bacterial resistance. As described, the peptidoglycans continues to be cross linked as usual but the over all new resulting cell wall has developed a resistance against the antibiotic penicillin due to non recognition enhancement by the bacterial resistance genes.

the answer to your question is:

c. complementary base-pairing

age range would be the answer