DNA Replication Explained Step by Step | Enzymes, Leading & Lagging Strand

Описание: DNA replication is a fundamental biological process that ensures genetic information is accurately passed from one generation of cells to the next.
This video provides a complete, step-by-step explanation of DNA replication, covering all enzymes, mechanisms, and exam-important concepts required for board and competitive examinations.

🔬 Topics Covered in This Video:

Definition and importance of DNA replication

Origins of replication in prokaryotes and eukaryotes

Formation of replication bubbles and replication forks

Role of helicase, single-strand binding proteins, and topoisomerase

RNA primers and primase

Function of DNA polymerase III and DNA polymerase I

Antiparallel synthesis of DNA strands

Leading strand vs lagging strand

Okazaki fragments and their processing

Enhanced role of DNA ligase on both strands

DNA replication complex and trombone model

Proofreading and mismatch repair mechanisms

End-replication problem and the role of telomeres

📌 Key Exam Line Included:
DNA ligase completes DNA replication by sealing nicks and joining DNA fragments on both the leading and lagging strands.

🎓 This lecture is especially useful for:

O Level / A Level Biology

Intermediate & F.Sc students

MDCAT / NEET/entry test preparation

School and college biology exams

👉 Watch till the end to fully understand one of the most important chapters of molecular biology.

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