The answer is A. Erwin Chargaff had discovered years earlier that the percentages of adelnine [A] and thymine [T] bases are almost equal in any sample of DNA. It became the Charfaff's Rule. However, no one knew why they did.
Given that a cell is undergoing meiosis, at the end of meiosis I, its number of chromosomes would be in half. Provided in the question that the cell in G1 has 40 chromosomes, at the end of meiosis I, there will be 20 chromosomes in each daughter cell. And each chromosome has two sister chromatids, then there will be 40 sister chromatids in each daughter cell.
All of the above, they are all good forms of decreasing plosion but B is the best answer <span />
Mass × Acceleration
60 kg × 5m/^s =
300
The answer is C. 300 N