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9 Cards in this Set
- Front
- Back
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Who came out with the structure of DNA? When?
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James Watson and Francis Crick
April 1953 |
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Who discovered transformation? How?
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Frederick Griffith
By studying Streptococcus pneumoniae and mice; the R strain was harmless and the S strain was pathogenic. he mixed heat-killed S strain w/ live R strain and got the pathogenic strain back from the blood |
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Transformation
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A change in genotype and phenotype due to the assimilation of foreign DNA by a cell
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What do viruses consist of?
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DNA (sometimes RNA) enclosed by a protective coat of protein
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Bacteriophages or phages
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Viruses that specifically attack bacteria
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What is a T2 and what does it do?
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Phage that consists almost entirely of DNA and protein that attacks E. Coli, which it turns into a T2-producing factory that releases phages when the cell ruptures.
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What are the 4 bases in DNA?
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Adenine - A
Thymine - T Guanine - G Cytosine - C |
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What are Chargaff's rules?
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(%T = %A)
(%G = %C) |
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Hydrogen bonds and the nitrogenous bases?
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Adenine -> 2 H+ bonds with Thymine
Guanine -> 2 H+ bonds with Cytosine |
