WebThe nitrogenous bases of the two separate polynucleotide strands are bound together, according to base pairing rules (A with T and C with G), with hydrogen bonds to make double-stranded DNA. The complementary nitrogenous bases are divided into two groups, pyrimidines and purines. WebForms the phosphodiester bonds between the nucleotides. State the role of a gene. A code for polypeptides. Explain how the structure of DNA allows replication. (5) it is a double helix strand. both strands act as a template. contains weak hydrogen bonds that can be easily broken. there are complementary base pairings: the purines and pyrimidines.

DNA Repair Flashcards Quizlet

WebBase pairing The nucleotides are identical except for the base, which can be an … WebSep 24, 2024 · Double-stranded DNA has a regular geometric structure with a fixed distance between the two backbones. This requires the bases pairs to consists of one base with a two-ring (bicyclic) structure (these bases are called purines) and one with a single ring structure (these bases are called pyrimidines). cryptotab boost trial

28.2: Base Pairing in DNA - The Watson-Crick Model

WebWhat proteins are crucial for creating and maintaining DNA replication forks? Choose the best explanation. Helicase creates the replication fork; single-strand binding proteins keep the single strands from reuniting. The nitrogenous base thymine is what type of … WebDNA replicated in 5’ to 3’ direction (5’->3’). Incoming nucleotides can only be added to 3’OH tail of a growing DNA strand 3. Oxygen of 3’OH groups makes a nucleophilic attack on inner most phosphorus atom of incoming nucleoside triphosphate. WebBasic Features of DNA Replication: All genetically relevant information of any DNA molecule is present in its sequence of bases on two strands. Therefore the main role of replication is to duplicate the base sequence of parent DNA molecule. The two strands have complementary base pairing. cryptotab browser android