Explanation:
Francis Crick and James D. Watson published an article entitled as "Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid" in the scientific journal Nature dated 25 April 1953 which described the discovery of the double helix structure of DNA.
The above quote refers to the fact the complementary base pairing is key to the double helical structure of DNA and the same pairing facilitates the synthesis of new DNA strands using parental DNA strand as a template.
As we know that new DNA molecules are synthesized during replication which is a semi-conservative mechanism and forms a daughter DNA duplex carrying one parental and one new strand. This copying mechanism ensures inheritance of genetic information, present on DNA, from parents to offspring.
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