page 08 12. Which diagram shows the correct positions of the cell cycle checkpoints? Checkpoint is represented by G2 S G0 M G1 G2 S G0 M G1 G2 S G0 M G1 G2 S G0 M G1 A B C D 13. In a study of transmission of the rabies virus by vampire bats, the density of bat colonies was estimated using mark and recapture techniques. The total population estimate is given by (MC)/R where the first sample captured is M, the second sample captured is C and the number recaptured is R. One colony was estimated to have a bat population of 440 following the capture of a second sample of 64 bats, of which 8 were marked. The number of bats captured initially, marked and released was A 32 B 55 C 110 D 128 14. Which of the following describes the purpose of a randomised block design? A Controlling for confounding variables B Ranking sample data C Ensuring that sampling is representative D Monitoring the dependent variable