NECTA Form 1–4 (CSEE) · Form 4 · Biology (Form 4) · Notes · Unit 4: Genetics, Variation and Heredity – Comprehensive Revision Notes
Comprehensive 10-page notes covering Mendelian monohybrid and dihybrid laws, incomplete dominance, codominance, multiple alleles (ABO system), Rhesus incompatibility, sex linkage (hemophilia), sickle-cell point mutation, and Down syndrome.
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