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72nd BPSC Prelims 2026 | Science Marathon by Dr. Aakriti Raj | 72nd BPSC Strategy for Science 2026
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BPSC aspirants who need a focused, interactive revision of biology for the 72nd Prelims.
TL;DR
Dr. Aakriti Raj leads a high-energy biology marathon for the 72nd BPSC Prelims, focusing on genetics with concept revision and exam-oriented questions. She emphasizes active participation and provides a free PDF on Telegram. The session aims to boost confidence and retention for the upcoming exam.
Key Takeaways
- Genetics is a high-weightage but feared topic in BPSC; the session aims to demystify it through concept-based revision rather than just solving questions.
- Genetics studies both heredity (similarities) and variation (differences) between parents and offspring, making it a dual-focus discipline.
- Gregor Mendel is the father of genetics; his laws form the foundation, but understanding cell biology—especially chromosomes and DNA—is essential first.
- DNA was discovered by Friedrich Miescher, while its double-helix structure was elucidated by Watson and Crick—a common exam distinction.
- The basic unit of DNA is the nucleotide, composed of a base, sugar, and phosphate; nucleotides are linked by phosphodiester bonds, not hydrogen bonds.
- Active student participation (e.g., answering in comments) directly influences the depth and duration of the live revision session.
In This Video
- 00:00Welcome and Session Introduction
Dr. Aakriti Raj welcomes viewers and sets expectations for the marathon session.
- 01:05Engagement and Energy Boost
She encourages viewers to share the class to maintain energy and enthusiasm.
- 02:27Starting Biology Marathon
The session focuses on biology revision with concepts and questions, not just questions.
- 04:20Genetics: Basics and Importance
Genetics is chosen due to its difficulty and recent exam questions; basics are reviewed.
- 07:08DNA Discovery and Structure
Friedrich Miescher discovered DNA; Watson and Crick proposed the double helix model.
- 08:12Nucleotide and Bond Types
DNA's basic unit is nucleotide; nucleotides are linked by phosphodiester bonds.
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