What caused an increase in the coronavirus's genetic variation?

The structure in coronavirus has no rewriting ability which leads to many errors during replication and high genetic variation. i think :)

Explanation:

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.