When does homologous recombination most likely occur in order to flawlessly repair double-stranded DNA breaks? Group of answer choices

A. before DNA is replicated, to avoid propagating the error

B. when the damage is overlooked by the fast-acting mismatch repair system

C. after the cell’s DNA has been replicated

D. after the broken ends have been "cleaned" by a nuclease

E. whenever a double-strand break is detected

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.