Genetics & Plant Breeding Notes for IBPS AFO

Understand carbohydrate types (monosaccharides, oligosaccharides, polysaccharides), starch structure, and glucose–glycogen regulation — with agricultural examples and exam tips.

Understand biotechnology fundamentals — key terms (cDNA, GMO, electroporation, transposons), colour-coded application areas, and agricultural biotechnology — with exam tips and summary table.

Understand cell discovery, cell theory, types of cells, plasma membrane structure, and the difference between prokaryotic and eukaryotic cells — with agricultural examples and exam-focused notes.

Cell structure and organelles, cell division (mitosis, meiosis), DNA replication, transcription, translation, gene regulation, chromosomal aberrations, chromosome numbers in major crop plants.

Understand the foundations of genetics — variation, heredity, genotype vs phenotype, gene structure, and the history of hereditary thought — with agricultural examples and exam tips.

Understand seed definitions (agronomic vs botanical), seed characteristics, germination testing procedures, and seed quality parameters — with agricultural examples and exam tips.

Understand germplasm concepts, gene pool classification (primary, secondary, tertiary), plant genetic resources, and their role in crop improvement — with agricultural examples.

Understand protein structure, amino acid classification, essential amino acids, deficient amino acids in crops, and protein types — with agricultural examples and exam mnemonics.

Understand plant tissue culture techniques, totipotency, genetic engineering methods, and their applications in crop improvement — with agricultural examples and exam tips.

Understand plasma membrane structure, cell wall composition, protoplasm properties, and how these coverings protect plant cells — with agricultural examples and exam tips.

Understand Mendel's work on garden pea, the three laws of inheritance (segregation, dominance, independent assortment), monohybrid and dihybrid crosses, test cross, and deviations — with agricultural examples and exam tips.

Mendel's laws, linkage and crossing over, sex-linked inheritance, quantitative genetics, multiple alleles, epistasis, cytoplasmic inheritance, inbreeding depression — critical for exams.

Understand seed viability tests (TZ test), seed vigour, factors affecting viability, isolation distances for seed production, and genetic purity maintenance — with exam tips.

Understand the six key germplasm activities — exploration, collection, conservation, evaluation, documentation, exchange — plus genetic erosion and key organisations.

Understand DNA, RNA, enzyme characteristics, vitamin classification, lipid types, and dietary fibre — with agricultural examples and exam-ready one-liners.

Carbohydrates, proteins, amino acids, enzymes, vitamins, nucleic acids, and lipids for competitive exams.

Understand the enzymes and tools of genetic engineering — restriction endonucleases, ligase, vectors, passenger DNA, cDNA, and synthetic DNA — with agricultural applications and exam tips.

Master mitochondria, plastids, chloroplasts, ER, ribosomes, Golgi body, lysosomes, and other organelles — with agricultural examples, comparison tables, and exam tips.

Understand types of dominance, multiple alleles (blood groups, self-incompatibility), penetrance, expressivity, pleiotropy, lethality, and epistasis — with agricultural examples and modified dihybrid ratios.

Understand the four classes of seed (breeder, foundation, certified, truthfully labelled), their tag colours, multiplication chain, and seed moisture standards — with exam tips.

Understand Vavilov's 12 centres of origin, the concept of centres of diversity, and the Law of Homologous Series in Variation — with agricultural examples and exam tips.

Conceptual revision quiz covering carbohydrates, proteins, amino acids, enzymes, nucleic acids, vitamins, and lipids

Understand rDNA technology processes, PCR steps, gene cloning, and applications like Quality Protein Maize — with agricultural examples and exam tips.

Genetic engineering, recombinant DNA technology, tissue culture, transgenic crops (Bt cotton, Golden Rice), molecular markers (SSR, SNP), bioinformatics, biosafety regulations — for exams.

Understand the nucleus, nucleolus, RNA polymerases, chromosome structure, and the building blocks of DNA and RNA — with agricultural examples, comparison tables, and exam tips.

Understand gene linkage, coupling and repulsion phases, linkage groups, detection methods, and significance in plant breeding — with agricultural examples and exam tips.

Understand seed dormancy types, causes, methods to break dormancy, seed storage principles, and Harrington's Rule — with agricultural examples and exam tips.

Understand asexual and sexual reproduction in crops, their genetic consequences, and how they determine breeding strategy — with agricultural examples and exam tips.

Understand molecular markers (RFLP, RAPD, AFLP, SSR, SNP), marker-assisted selection, QTL mapping, gene pyramiding, and genomics — with agricultural examples and exam tips.

Master DNA and RNA as genetic material, gene concepts (operon, cistron), and the genetic code — with agricultural examples, comparison tables, and exam-focused mnemonics.

Understand the mechanism, types, and factors affecting crossing over, plus coincidence, interference, and significance in plant breeding — with agricultural examples and exam tips.

Understand seed treatment methods (chemical, biological, physical), types of seed dressing, seed coating, and pelleting — with agricultural examples and exam tips.

Understand self-pollination vs cross-pollination, mechanisms promoting each type, and their significance in plant breeding — with agricultural examples and exam tips.

Mass selection, pure line selection, hybridization, heterosis breeding, backcross method, polyploidy breeding, mutation breeding, variety release and registration — critical for exams Professional Knowledge.

Understand GM crop milestones, Bt cotton, Bt brinjal, GM mustard, GEAC, terminator technology, and biopharming — with agricultural examples and exam tips.

Understand the cell cycle, types of cell division (amitosis, mitosis, meiosis, endomitosis), and their role in plant growth and breeding — with comparison tables and exam tips.

Understand sex-linked inheritance (colour blindness, haemophilia), sex-influenced traits (horns in sheep), and sex-limited traits (milk production) — with agricultural examples and exam tips.

Understand India's seed laws — Seeds Act 1966, Seed Rules 1968, Seed Control Order 1983, New Seed Bill, and the National Seed Programme — with exam tips.

Seed production classes (breeder, foundation, certified), seed certification, quality testing (germination, vigour, purity), seed dormancy, seed storage, Seeds Act and national seed policy.

Understand gametophytic and sporophytic self-incompatibility, their genetic control, and use in hybrid seed production — with agricultural examples and exam tips.

Conceptual revision quiz covering tissue culture, totipotency, PCR, rDNA technology, molecular markers, GM crops, and biotech-based crop improvement

Learn the stages of mitosis (prophase, metaphase, anaphase, telophase) and cytokinesis — with agricultural examples, comparison tables, and exam-focused mnemonics.

Understand cytoplasmic (maternal/extranuclear) inheritance, CMS in hybrid seed production, and the difference between nuclear and cytoplasmic inheritance — with agricultural examples and exam tips.

Understand seed certification process, agencies (NSC, SSC, SSCA), certification standards, field inspection, and the Seed Village concept — with exam tips.

Understand genetic male sterility (GMS), cytoplasmic male sterility (CMS), CGMS systems, and chemical hybridising agents — with applications in hybrid seed production and exam tips.

Revision quiz covering callus and organogenesis, tissue culture variants, vectors and transformation, PCR details, marker systems, transgenics, and biotech-led crop improvement.

Master meiosis I and II, prophase I sub-stages, crossing over, and cell division calculations — with agricultural examples, comparison tables, and exam mnemonics.

Understand euploidy, autopolyploidy, allopolyploidy, aneuploidy, colchicine treatment, and their role in crop improvement — with agricultural examples and exam tips.

Understand IPR in agriculture — patents, plant variety protection (PPVFR Act 2001), farmers' rights, breeders' rights, and UPOV — with exam tips.

Understand what plant breeding is, the history of crop domestication, breeding objectives, and major breeding methods — with agricultural examples and exam tips.

Conceptual revision quiz covering cell theory, organelles, nucleus, genetic material, cell cycle, mitosis, and meiosis

Understand structural chromosomal aberrations — deletion, duplication, translocation, and inversion — with agricultural examples, comparison tables, and exam tips.

Conceptual revision quiz covering seed definition, testing, viability, classes, dormancy, treatment, legislation, certification, and IPR in seed technology

Understand plant introduction as a breeding method — primary vs secondary introduction, acclimatisation, plant quarantine, merits, and demerits — with agricultural examples and exam tips.

Revision quiz covering membrane models, cell wall connections, organelle details, chromatin and chromosomes, cell cycle regulation, mitotic details, and meiotic events and significance.

Conceptual revision quiz covering genetics basics, Mendelian inheritance, dominance, linkage, crossing over, sex genetics, cytoplasmic inheritance, ploidy changes, and chromosomal aberrations

Understand selection and hybridisation methods for self-pollinated crops — pedigree, bulk, backcross, and SSD methods — with agricultural examples and exam tips.

Additional conceptual revision quiz covering uncovered genetics sub-topics across heredity basics, Mendelian analysis, dominance, linkage, crossing over, sex genetics, cytoplasmic inheritance, ploidy variation, and chromosomal aberrations

Understand population improvement, recurrent selection, synthetic and composite varieties, and multiline varieties for cross-pollinated crops — with agricultural examples.

Understand hybridisation procedure (emasculation, pollination), types of crosses, and development of synthetic, composite, and multiline varieties — with agricultural examples.

Understand the basic principles of selection, mass selection procedure, advantages, limitations, and varieties developed — with agricultural examples and exam tips.

Understand pure line theory, Johannsen's experiments, pure line selection procedure, progeny testing, and comparison with mass selection — with agricultural examples.

Understand gene mutations, chromosomal mutations, physical and chemical mutagens, and their role as the ultimate source of genetic variation — with agricultural examples and exam tips.

Understand mutation breeding procedures for oligogenic and polygenic traits, physical and chemical mutagens, gamma gardens, and successful mutant varieties — with exam tips.

Understand the genetic basis of disease resistance, gene-for-gene hypothesis, vertical vs horizontal resistance, insect resistance mechanisms, and breeding procedures — with exam tips.

Understand breeding approaches for drought, waterlogging, salinity, and cold tolerance — resistance mechanisms, screening techniques, and sources — with exam tips.

Understand the difference between quantitative (polygenic) and qualitative (oligogenic) traits, heritability, genetic variance, and their breeding implications.

A comprehensive glossary of exam-critical breeding and genetics terms — heterosis, inbreeding depression, ideotype, chimera, amphidiploid, and more — with precise definitions.

Revision quiz covering germplasm, centres of origin, conservation, reproduction, pollination, self-incompatibility, and male sterility basics

Revision quiz covering plant introduction, quarantine, hybridization, selection methods, population improvement, and heterosis-based variety development

Revision quiz covering mutation, mutation breeding, biotic and abiotic stress breeding, quantitative genetics, and high-yield breeding terminology