CH6BookNotes - o G & C have 3 bonds b/w them o...

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Ch 6 15:45 Experiments Designate DNA as the Genetic Material DNA o Nucleotides bonded by phosphodiester bonds o Linked chain of nucleotides is a polymer Bacteria o Carry DNA in single circular chromosome o No nuclear membrane o Divide by binary fission Transformation o Ability of a substance to change the genetic characteristics of an organism Phages – viruses o Equal weights protein and DNA o Reproduce only after infecting cell The Watson- Crick Model: DNA is a Double Helix Nucleotide o Consists of a deoxyribose sugar, phosphate, and nitrogen base o DNA chain with many nucleotides has polarity o Written 5’ -> 3’ direction (L to R) o
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Unformatted text preview: o G & C have 3 bonds b/w them o Equal amounts of A&T and C&G DNA Stores Information in the Sequence of Its Bases Proteins read info in DNA and either bind to certain sequence or synthesize a strand Sense information from spacing of H bonds in major and minor grooves Some viruses use RNA as genetic material Most RNA is single stranded and has fewer nucleotides in strand Complicated structure o One stranded can loop back on itself and pair to its own complementary base pairs RNA less stable than DNA; participates in gene expression and protein sysnthesis...
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This note was uploaded on 09/27/2010 for the course BIO 325 taught by Professor Saxena during the Spring '08 term at University of Texas at Austin.

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