GAT-B 2027

Eligibility below is as per the GAT-B/BET 2026 information bulletin; the 2027 criteria will be published with the 2027 bulletin.

• BET (a separate test in the same bulletin): a 4-year UG degree in biotechnology or allied life sciences with at least 75% (5% relaxation), or BE/BTech with 60% (55% for SC/ST/differently abled), or a master's degree with 60% (55% for SC/ST/differently abled).
• BET age limit: 28 years for General and EWS; 33 years for SC/ST/differently abled/women; 31 years for OBC (Non-Creamy Layer).

Source: GAT-B/BET 2026 information bulletin (chapter 3), 2026 cycle.

• Mode: Computer Based Test, multiple-choice questions, 180 minutes in a single shift; medium English only.
• Marking: Section A has -0.5 for each wrong answer; Section B has -1 for each wrong answer. Unattempted questions carry no marks.
• If more than one option is correct, marks go to candidates who marked any correct option. If no option is correct or a question is wrong, it is dropped and full marks may be given to those who attempted it.
• BET (same bulletin): Section A has 50 compulsory questions and Section B has 150 questions of which 50 are attempted, 3 marks each and -1 for a wrong answer, 300 marks in 180 minutes.

Source: GAT-B/BET 2026 information bulletin (chapter 4), 2026 cycle.

Section A: 10+2 level

• Physics, Chemistry, Mathematics and Biology (no topic list is given)

Section B: bachelor's level

• Biochemistry: biomolecules, membranes, enzymes, metabolism, photosynthesis, respiration, bioenergetics
• Microbiology: viruses, microbial classification and diversity, growth and nutrition, nitrogen fixation, host-pathogen interaction
• Cell biology: cell structure, cell cycle, cell-cell communication, signal transduction
• Genetics and molecular biology: genes and chromosomes, mutations, replication, transcription, translation and regulation, Mendelian inheritance, linkage and mapping, microbial genetics, RNA interference, DNA repair
• Analytical techniques: microscopy, centrifugation, spectroscopy, chromatography, electrophoresis, microarray
• Immunology: innate, humoral and cell-mediated immunity, antibody structure and diversity, MHC, antigen processing, monoclonal antibodies, tolerance, hypersensitivity, autoimmunity
• Bioinformatics: resources and search tools, databases, sequence analysis, data mining, molecular dynamics
• Recombinant DNA technology: enzymes, vectors, libraries, cloning, PCR, sequencing, blotting, gene transfer, gene therapy
• Plant biotechnology: totipotency, tissue culture, micropropagation, protoplast fusion, secondary metabolites, transgenic plants
• Animal biotechnology: animal cell culture, hybridoma and stem cell technology, animal cloning, transgenic animals
• Bioprocess engineering and technology: reactor design, mass and heat transfer, media and kinetics, sterilisation, batch and continuous processes, scale-up, downstream processing, enzymes, biofuels, immobilisation, bioremediation

Source: GAT-B syllabus on the RCB website, linked from the 2026 bulletin. The PDF itself is headed GAT-B 2020; the topic groups above are condensed from it.