Genetic code: Sequence of 20 amino acids & 4 bases, grouped into 3s. It is a universal code (all species)

Cell cycle: Interphase = Gap 1 + synthesis + Gap 2

Sexual reproduction, meiosis produces non-identical daughter cells and is vital for organisms to evolve

Applications of gene technology include gene products (e.g. penicillin), new phenotypes (long life tomatoes) and gene therapy (in early stages)