Molecular biology nucleic acid I) DNA Watson and Crick's model of DNA and forms of DNA ii) RNA structure and types
Understand the Problem
The question is asking for information on the structure of DNA as proposed by Watson and Crick, as well as the different forms of DNA, and also inquiring about RNA structure and its various types.
Answer
Watson and Crick's DNA model is a double-stranded helix, and it comes in A-form, B-form, and Z-form.
The Watson and Crick model of DNA is a double-stranded helix and major forms of DNA include A-form, B-form, and Z-form.
Answer for screen readers
The Watson and Crick model of DNA is a double-stranded helix and major forms of DNA include A-form, B-form, and Z-form.
More Information
Watson and Crick's model of DNA revealed the double helix structure and the complementary base-pairing system. Forms of DNA differ based on their helical structure; A-form is shorter and right-handed, B-form is the most common form and right-handed, and Z-form is left-handed.
Tips
A common mistake is misidentifying the forms of DNA. Remember that B-form is the most prevalent under physiological conditions.
Sources
- Discovery of DNA Structure and Function: Watson and Crick - Nature - nature.com
- 2.5: B-Form, A-Form, and Z-Form of DNA - Biology LibreTexts - bio.libretexts.org
- Watson & Crick Model of DNA | Overview, Experiment & Base Pairing - study.com
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