Which DNA among the following is left handed?

Z-DNA

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A-DNA

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C-DNA

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B-DNA

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Solution

The correct option is A Z-DNA
Z DNA is one of many possible double helical structures of DNA. It is a left - handed double helical structure in which the double helix winds to the left in a zig -zag pattern.

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what is right and left handed dna?

List-I	List-II
a. DNA Ligase	$1$ . Catalyses the covalent union of segments of an interrupted sugarphosphate strand in double-stranded DNA
b. DNA polymerase	$2$ . End nuclease that digests either single stranded or double stranded DNA
c. DNase I	$3$ . Produces single or double stranded breaks in DNA during replication to release tension brought about by the separation of double strands
d. DNA topoisomerase	$4$ . Catalyses the formation of DNA worn deoxyribonucleotides using one strand of DNA as template

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