Biology 9700/13 May June 2012 | Cambridge AS Level Past Papers With Mark Scheme

1. Speciation in greenish warbler populations caused by geographical isolation and behavioral changes, focusing on mating behavior as an isolating mechanism.
2. Production and identification of monoclonal antibodies through hybridoma technology and comparison with conventional diagnostic methods.
3. Gel electrophoresis applications in distinguishing VNTRs and genetic screening for β-globin gene mutations causing sickle cell anemia.
4. Evolution of Bt resistance in corn borers and strategies like HDR to manage resistance through interbreeding between resistant and non-resistant populations.
5. Role of progesterone in the menstrual cycle and effects of maternal and offspring diets on the onset of puberty in rats.
6. Conservation challenges for Rafflesia arnoldii, emphasizing habitat loss and biodiversity maintenance.
7. X-linked inheritance in Drosophila eye color and human hemophilia, with genetic diagrams and explanations of inheritance patterns.
8. Effects of temperature on photosynthesis rates, differences between C3 and C4 plants, and limiting factors in light intensity experiments.