Biology 9700/41 Oct Nov 2020 | Cambridge AS Level Past Papers With Mark Scheme

- Transverse section of maize leaf, C4 plant, photosynthesis adaptation, high temperatures, PEP carboxylase.
- Genetic variation in goats, nucleotide position 5752, growth factor gene, milk yield comparison, CC, CG, GG genotypes.
- Hardy-Weinberg principle application, allele frequencies, genotype predictions, equilibrium testing, statistical methods.
- DNA barcoding, species identification, mitochondrial gene sequencing, subspecies evolution, migratory patterns.
- Sickle cell anemia, HbA and HbS alleles, mutation effects, fetal hemoglobin, gene expression control.
- Organophosphate effects on muscle function, synaptic transmission, enzyme inhibition, muscle contraction mechanisms.