<span>Genes -- and, thus, the traits they code for -- are passed from parent to offspring. From generation to generation, well-understood molecular mechanisms reshuffle, duplicate, and alter genes in a way that produces genetic variation. This variation is the raw material for evolution.</span>
Explanation:
It should be noted that the vegetables at a buffet should be heated to a temperature of about 140°F or above. This is necessary in order to prevent the food from spoiling which is referred to as the temperature danger zone which is when the temperature is lesser and this can result into bacteria growing on the food.
Molecules is the answer to your question