Biology 9700/51 May June 2014 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigating genetic variation using amplified fragment length polymorphism (AFLP), focusing on DNA digestion, RNA probe hybridization, and gel electrophoresis techniques.

2. Standardizing variables and analyzing genetic fingerprints across species varieties, emphasizing reproducibility and statistical reliability.

3. Conducting field studies on green manuring effects on Sorghum yield, comparing root, shoot, and combined applications for growth optimization.

4. Quantitatively analyzing Sorghum yield differences, calculating percentage increases, and comparing ratios of grain mass improvements under different treatments.

5. Interpreting t-test results to assess statistical significance of treatments, defining null hypotheses, and understanding P-value implications for data reliability.

6. Drawing conclusions on the specific contributions of root, shoot, and combined green manures to overall plant yield enhancement, supported by statistical and experimental evidence.