Which of the following genes would not likely be encoded on a plasmid?

genes encoding toxins that damage host tissue

genes encoding antibacterial resistance

gene encoding enzymes for glycolysis

genes encoding enzymes for the degradation of an unusual substrate

gene encoding enzymes for glycolysis.

Explanation:

Plasmid may be defined as an extra chromosomal circular DNA that replicate independently of the main chromosomal material. Plasmid are generally used for the manipulation of genes in molecular technologies.

Plasmid can encode gene for toxins, antibacterial resistance and for the unusual substrate degradation. The plasmid cannot code enzyme for glycolysis because these enzymes are already present in the host organisms. Glycolysis enzymes are independent on the plasmid regulation.

Thus, the correct answer is option (3).