Assertion (A): The backbone of DNA and RNA molecules is a chain consisting of heterocyclic base, pentose sugar and phosphate group. | Shaalaa.com
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St Bernard's Academy Science on Instagram: "Students modeled the structure of DNA using Twizzlers as the sugar-phosphate backbone (deoxyribose + phosphate) and gummy bears as nitrogenous bases. Correct base pairing (A–T, C–G) was shown through complementary base pairs held together by hydrogen bonds. During DNA replication, the double helix “unzipped” as hydrogen bonds broke, allowing each original strand to serve as a template for a new complementary strand—demonstrating semi-conservative repli
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Rashi Gupta | PhD Scholar on Instagram: "DNA ligase is a crucial enzyme in molecular biology that repairs breaks (nicks) in the sugar-phosphate backbone of DNA. During DNA replication and repair, it covalently links Okazaki fragments on the lagging strand, ensuring a continuous and stable DNA strand. Without DNA ligase, the genome would remain fragmented and unstable. Just like DNA ligase seals the nicks to maintain the integrity of DNA, you join all the broken strands of my heart and make it wh
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