Which property of DNA double helix lead Watson and Crick to hypothesise semi conservative mode of DNA replication?

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Specific base pairing $(A = T, G \equiv C)$

Stabililty

Capability to express in form of characters

Mutation

answer is A.

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Detailed Solution

The property of DNA double helix that led Watson and Crick to hypothesize the semi-conservative mode of DNA replication was the complementary base pairing between the two DNA strands.

It was this complementary base pairing that provided the key insight for understanding how DNA replicates. Watson and Crick reasoned that if you know the sequence of bases on one strand of DNA, you can predict the sequence of bases on the other strand because of the complementary base pairing rules. This implied that during DNA replication, each original DNA strand could serve as a template for the synthesis of a new strand.

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