Types of DNA in हिन्दी | Differences & Structure | B.Sc. & M.Sc. Zoology

In this video, we will study the different types of DNA in detail, focusing on A-DNA, B-DNA, C-DNA, D-DNA, E-DNA, and Z-DNA. Among these, B-DNA is the most common and biologically important form, but exams often ask differences between A, B, and Z DNA. 0:00 – Types of DNA Introduction 0:21 – What are the different types of DNA? 0:30 – B-DNA structure and features (Watson & Crick model) 6:00 – A-DNA structure and features 8:12 – Z-DNA structure, features and importance in gene regulation 10:20 – C-DNA explained (formation & features) 12:01 – D-DNA explained (rare form) 13:49 – E-DNA explained (methylation & bromination) 14:47 – Difference between A-DNA, B-DNA, and Z-DNA (tabular comparison) 17:28 – Summary and exam notes We’ll cover: Structure and features of B-DNA (Watson & Crick model) Alternative helical forms: A-DNA, Z-DNA, C-DNA, D-DNA, and E-DNA Differences in helix handedness, base pairs per turn, rise, pitch, diameter, grooves Special notes on gene regulation and rare DNA forms Tabular comparison of A, B, and Z DNA (most important for exams) This topic is highly important for B.Sc. Zoology, M.Sc. Zoology, NEET, CSIR-NET, GATE, and ICAR exams. Watch till the end for complete clarity and revision-friendly notes. If you need my handwritten notes, join my Telegram (link in channel bio). ✅ Subscribe for more Zoology lectures and notes ✅ Like & Comment if this helped you ✅ Share with friends preparing for exams