Lecture 13

Lecture 13 - Nucleotides pairs form ladder rungs Adenine...

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Lecture 13 DNA structure and function
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BIOL 101: wk5-1 • Early 1950s – They were young scientists at Cavendish Laboratory in Cambridge, England. • Watson and Crick determine DNA structure is a double helix Watson and Crick
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BIOL 101: wk5-1 • Nucleotides – Three components: • Five-carbon sugar • Phosphate group • Nitrogen- containing base Building blocks of DNA
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BIOL 101: wk5-1 • Four nitrogenous bases in DNA – Adenine – Thymine – Guanine – Cytosine Building blocks of DNA
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BIOL 101: wk5-1 • A twisted ladder of two strands of nucleotides. • Sugar-phosphate backbone (ladder rails)
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Unformatted text preview: Nucleotides pairs form ladder rungs Adenine hydrogen bonds with Thymine. Cytosine hydrogen bonds with Guanine. Nucleotide sequence encodes genetic information DNA double helix BIOL 101: wk5-1 DNA replication Precedes cell division. Process: DNA strands separate New complementary base pairs are added forming a new strand Result: two double helices. Each containing one old strand of DNA and one new strand of DNA How does DNA copy itself BIOL 101: wk5-1 DNA replication...
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Lecture 13 - Nucleotides pairs form ladder rungs Adenine...

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