In humans, protein 53 (p53) is a tumor suppressant protein encoded on the p53 gene, which has been mapped to the short arm of chromosome 17. One role of this protein is to facilitate the repair of damaged DNA. In which part of the cell cycle does the p53 gene have the most active role? F- G1 G- G2 H- S J-M

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.