Answer: Incorrectly paired nucleotides that still remain following mismatch repair become permanent mutations after the next cell division.
Explanation: If they replicated than the entire thing would copy that and would be permanent.
A metallurgical microscope
What are the functions of the cells resulting from a double fertilization event? Both cells go on to form embryos. One cell goes on to form an embryo; the other cell goes on to form a protective seed coat. One cell goes on to form an embryo; the other cell goes on to form a fleshy fruit that has a protective function.
B is the answer to this question!