Answer:
the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
It is already in passive it looks like. Passive is past, and the word “caught” it passive because active would be “catch or catching”
When it is said that mutation is the ultimate source of genetic variation it means that it creates several new combinations which is similar to meiosis and fertilization because <span> new alleles and genes appear. It is just about some common points.</span>
THINK LOGICALLY, but allergens would be the best answer.