Question

when a bear is exposed to radiation, some of its cells can develop mutations in their DNA. If an adult bear's cell in G, is exposed to radiation, what is most likely going to happen to that cell? a. How might this impact the bear's future health? 8. If an adult bear's call that is dividing to become new skin cells or new lung cells is exposed to radiation and picks up mutations in its DNA, what could happen to that cell? a. How might this impact the bear's future health? 9. If an adult bear's germline cell is exposed to radiation and picks up mutations, what could happen to that cell? a. How might this impact the bear's future offspring? 10. Compare the images of Prophase in Mitosis and Prophase 1 in Melosis. How are they the same? How are they different? Mtotis Prophone Melo Prophose I 11. Compare the images of Metaphase in Mitosis and Metaphase I in Melosis. How are they the same? How are they different? Mosis Metaphase Melle Metaphase I 12. Compare the images of daughter cells produced in Mitosis and Melosis. How are they similar? How are they different? Mtosis Two new colis Melo Four gametes

Answer 1

7. We all know that a cell with G0 doesn't divide. So, after exposure to the radiation the DNA of the cell may be damaged.

7a. The mature cell with G0 may be non-functional after the exposure to the radiation. The cell may cope up the DNA damage by repairing it's DNA. If the DNA couldn't be repaired then the cell initiates apoptosis. If a most necessary cell (such as neuron, muscle cell) dies it can hamper the future health of the bear.

8. The cell will try hard to repair it's DNA. If DNA remains damaged then it may be replicated to the daughter cells and so on which may lead to cancer.

8a. With the damaged DNA the cell may be divided several rounds. It may produce several cells with damaged DNA. If DNA remains damaged, it can't control the cell cycle which leads to cancer.