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Question
DNA is made of two chains that twist about one another in the shape of a ______.
Options
Double helix
Broken ladder
Straight spiral
Straight ladder
MCQ
Fill in the Blanks
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Solution
DNA is made of two chains that twist about one another in the shape of a double helix.
Explanation:-
Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.
shaalaa.com
Deoxyribonucleic Acid (DNA) - Structure of Polynucleotide Chain
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