Biol1020-9.15-DNA notes

Biol1020-9.15-DNA notes - • Chargaff o Discovered how...

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DNA Hereditary material When viewed under a microscope, it is stained with fuchsia in order to be seen better. Consists of nucleotides: 1. 5-C-Sugar deoxyribose 2. Phosphate group(to #5C) 3. One of 4 nitrogenous bases (attached to #1C) …is a long, thin molecule o discovered in 1930s o SEE PICTURE 1950s, Dr. Mirsky o discovered that every cell has the same number of DNA in nucleus of cell, but that they were different in the gamettes they contained. (sperm or egg) (1/2 and ½)
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Unformatted text preview: • Chargaff o Discovered how much of each nitrogenous base each molecule had • Watson and Crypt o Discovered double-helix shape o Complementary Sequence of Bases: o o How does molecule replicate itself? Watson and Crypt guessed that it was in semi conservative manner SEE PICTURE • Meselson and Stahl o Replication origin o SEE 2PICTURES o The enzyme, DNApolymerase III affects this process...
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