BIOL2000 Lecture Notes - Lecture 5: Frederick Griffith, The Double Helix, Dna Replication
5 May 2020
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Document Summary
Chapter 3 -- nucleic acids and the encoding of biological information. In class quiz (01/29): chapters 1 - 3, book and class notes. Core concepts: deoxyribonucleic acid (dna) stores and transmits genetic information. Dna is a polymer of nucleotides and forms a double helix. Transcription is the process by which rna is synthesized from a dna template. The primary transcript is processed to become messenger rna (mrna). Key concepts: nucleotides are monomers that consist of a sugar, a phosphate group, and a nitrogen- containing base. Dna and rna"s primary structure consists of a sequence of nitrogen-containing bases, which contain information in the form of a molecular code. Dna"s secondary structure consists of two dna strands running in opposite directions, held together by complementary base pairing, and twisted into a double helix. Rna"s secondary structure includes short double helices and structures called hairpins. Dna and rna and genes: today- dna, structure, components, replication and regulation.
