What are the Three Types of DNA: A-DNA, B-DNA, and Z-DNA Explained

Discover the differences between A-DNA, B-DNA, and Z-DNA in this concise Q&A video.

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The three primary types of DNA are A-DNA, B-DNA, and Z-DNA. A-DNA is a right-handed helix and is shorter and wider, often found in dehydrated conditions. B-DNA is the most common DNA form in cells, also right-handed but longer and slimmer. Z-DNA is a left-handed helix, observed in specific biological processes and under high-salt conditions.

FAQs & Answers

  1. What is the difference between A-DNA, B-DNA, and Z-DNA? A-DNA is shorter and wider, B-DNA is the most common form in cells, while Z-DNA is a left-handed helix.
  2. Where is A-DNA commonly found? A-DNA is often found under dehydrated conditions.
  3. What biological processes involve Z-DNA? Z-DNA is observed in specific biological processes and under high-salt conditions.
  4. Why is B-DNA significant? B-DNA represents the stable form of DNA in most cellular environments, crucial for genetic stability.