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8 Cards in this Set
- Front
- Back
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What are Okazaki fragments?
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Tiny pieces on the lagging strand during DNA replication. Later connected by DNA ligase.
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What goes downnn during DNA replication?
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1. Occurs during S phase of cell cycle
2. Helix unzips with HELICASE 3. Split into replication fork 4. DNA POLYMERASE adds nucleotides in 5'3 direction 5. DNA LIGASE fixes holes in lagging strand 6. DNA POLYMERASE proofreads the DNA for errors. |
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Vhat is HELICASE? :O
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UNZIPPER OF DNA.
*if its in a case, you need to unzip it* (: |
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Deeference between PURINE and PYRIMIDINE.
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*Purine - nitrogenous base structure for AG nucleotides, double ring
*Pyrimidine - nitrogenous base structure for CT, single ring |
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NAME some common RECESSIVE disorders! Now! 10 seconds!
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1. Tay Sachs - can't break down certain lipid, blindness + brain damage, Jews
2. Cystic Fibrosis - excessive mucus secretion into lungs + digestive tract 3. Sickle Cell - improper amino acid substitution, less effective 4. Huntingtons - breakdown of nervous system, no show till 30s-40 |
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Vhat is a BARR BODY?
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One of the X chromosomes in a cell is unactivated. (in a female cell of course)
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Vhat is epitasis?
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expression of 1 gene affects another gene
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Vhat is pleiotrphy?
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1 gene has multiple effects on an organism (like chain reaction)
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