The correct answer is exotoxins.
<span>Exotoxins are molecules produced by certain species of pathogenic bacteria, usually during their normal growth and metabolism. They are produced inside the cell and released into the environment which is the main difference between those toxins and endotoxins (part of the cell wall in some bacteria). An exotoxin can disrupt the normal cellular metabolism of the host or can even destroy host's cells.</span>
They are the raw material of genetic variation. Without mutation,evolution could not occur
