Go deep on genetics and biotechnology — how traits are inherited and how we now read and edit the code of life. Classical genetics: dominant and recessive alleles, genotype vs phenotype, monohybrid and dihybrid Punnett squares, incomplete dominance and codominance, sex-linked inheritance, and reading a pedigree. Molecular genetics: DNA structure and base pairing, the central dogma (replication, transcription, translation), the genetic code and codons, and the types of mutations. Biotechnology: PCR, gel electrophoresis, restriction enzymes and recombinant DNA, DNA sequencing, cloning, GMOs, and CRISPR gene editing. Every inheritance and base-pairing question has a computed, always-correct answer, and each explanation names the classic mix-up (genotype vs phenotype, DNA vs RNA, dominant vs recessive). Built on OpenStax Biology and NIH genetics references — great for high-school/AP Biology and general science literacy. Distinct from Biology (the broad cells-to-ecology skill) by its depth on heredity and lab methods. Educational only — the science of heredity and biotech, not genetic-test interpretation or medical advice.