Question

वाटसन एवं क्रिक के अनुसार DNA मॉडल को समझाइए।
Describe the Watson and Crick model of DNA.​

Answer 1

Explanation:

Watson and Francis H. C. Crick, consists of two long helical strands that are coiled to form a double helix around a central axis. Two polymer strands coiled around each other are used in each DNA molecule. Each strand has a 5′end (with a group of phosphate) and a 3′ end (with a hydroxyl group).

Answer 2

Watson and crick model of DNA

Explanation:

• DNA is referred as double helical in nature , it resembles a twisted ladder.
• It has a backbone made up of sugar and phosphate.
• The nitrogenous bases are centrally located holding these two strands.
• One of the four bases are attached to each of the sugar the four strands are adenine, guanine, cytosine , thymine.
• Adenine bonds with thymine with two hydrogen bonds.
• Guanine bonds with cytosine with three hydrogen bonds.

• Both the strands of DNA run anti parallel to each other and are complementary to each other.
• The pitch of each helix is 3.4nm distance between each pitch is 0.34nm.
• Length of DNA is approx 2.2 meters.