Discuss how crossing - over leads to greater variability of phenotypes. Give an example to help explain your answer. ( Only answer if you know what the answer is. Do Not repost another person's answer that's already on brianly or any other websites). Will Mark Brainliest

a- all cells come from pre-existing cells

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

answer; heredity;