Graduate Aptitude Test – Biotechnology (GAT-B) is a national-level entrance examination for admission to DBT-supported postgraduate biotechnology and life science programmes in India.
The Graduate Aptitude Test – Biotechnology (GAT-B) has emerged as one of India’s most significant national-level entrance examinations for postgraduate biotechnology education. Conducted under the aegis of the Department of Biotechnology (DBT), Government of India, GAT-B acts as a gateway to DBT-supported MSc and integrated research programmes across premier institutions.
This research article presents a comprehensive 10-year analytical review (2015–2025) of the GAT-B examination, examining syllabus evolution, question trends, difficulty shifts, subject-wise weightage, and selection dynamics. Furthermore, it proposes a multi-tier preparation strategy, progressing from basic conceptual grounding to advanced, exam-oriented and research-aligned preparation, enabling aspirants to optimize performance and career outcomes.
Participating Organizations
| Organization | Location | Focus Area |
|---|---|---|
| Department of Biotechnology (DBT) | New Delhi | Biotechnology policy & funding |
| National Institute of Immunology | New Delhi | Immunology & vaccines |
| Indian Institute of Science | Bengaluru | Advanced life science research |
Biotechnology has become a cornerstone discipline in modern science, driving innovation in healthcare, agriculture, environmental management, industrial bioprocessing, and molecular diagnostics. To nurture high-quality human resources in this domain, the Department of Biotechnology (DBT) introduced GAT-B as a standardized national examination.
Unlike institute-specific tests, GAT-B evaluates conceptual clarity, analytical reasoning, and interdisciplinary integration, aligning postgraduate education with research readiness rather than rote memorization. Over the last decade, the exam has evolved significantly, reflecting advances in molecular biology, genomics, bioinformatics, and applied biotechnology.
GAT-B Exam Pattern
| Part A | General Biotechnology | 60 | 180 |
| Part B | Advanced Topics | 20 of 40 | 60 |
Structural Overview of GAT-B Examination
Exam Design
- Mode: Computer-Based Test (CBT)
- Duration: 180 minutes
- Total Marks: 240
- Question Type: Multiple Choice Questions (MCQs)
- Negative Marking: Yes (+3 / −1)
Sectional Distribution
- Part A: Core biotechnology & life sciences (mandatory)
- Part B: Specialized and advanced topics (choice-based)
GAT-B vs IIT JAM
| Conducting Body | DBT / NTA | IITs |
| Difficulty | Moderate–High | High |
The GAT-B examination has matured significantly over the last decade, transforming from a conventional entrance test into a research-oriented aptitude assessment. A successful candidate today must combine strong fundamentals, analytical reasoning, interdisciplinary understanding, and strategic exam preparation.
A stage-wise preparation model—basic, intermediate, and advanced—aligned with a clear understanding of 10-year trends, provides aspirants with a decisive competitive advantage. Beyond admission, such preparation cultivates the intellectual foundation required for impactful careers in biotechnology research, industry, and academia.
FAQs – GAT-B
Is GAT-B accepted across India?
Yes. GAT-B scores are accepted by DBT-supported universities and institutes nationwide.
Is there negative marking?
Yes. +3 for correct answers and −1 for incorrect responses.
