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Definition
| studied 2 strains of bacteria in study of heredity and DNA |
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Definition
| strain of bacteria that causes disease, pathogenic cells |
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Definition
| strain of bacteria that is non- pathogenic due to lack of outer coating, becomes pathogenic if co- in ejected with dead S cells |
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Definition
| genetic conversion, ex. R cells to S cells. DNA transforms phenotype not protein |
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Definition
| technique for finding the 3D structure of crystallized macromolecules, indicated DNA was some helix structure |
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Definition
| 2 nucleotides from opposite strands H bonded together, sequence of bp's hold hereditary info, used as unit of length |
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| Watson- Crick base- pairing rules |
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Definition
A bonds with T
G bonds with C
dictated by chemical & x-ray data
nucleotides in pair are complementary |
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Term
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Definition
process of copying DNA in S phase.
H bonds between strands broken
each single strand serves as the template for synthesis of new strand
each DNA molecule is half old and half new |
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Definition
| deoxynucleoside triphosphate, provide energy for DNA replication |
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Term
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Definition
place in DNA where strands separate to begin DNA replication.
-multiple organs allow large eukaryotic DNA molecules to be copied quickly
-each origin= 2 replication forks
-forks move in opposite directions
-forks connect to complete synthesis
-forks contain many enzymes |
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Term
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Definition
where DNA unwinds and synthesis of new strands occurs.
move in opposite directions
connect to complete synthesis
contain many enzymes |
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Term
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Definition
| unwinds and separates double helix, enzyme |
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Definition
| begins synthesis with a short stretch of complementary RNA (the primer) enzyme |
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Term
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Definition
makes new DNA
-can NOT start a strand on its own
- 5' to 3' direction only
-adds nucleotides to 3' of new strand always
- stops when hits 5' of RNA primer |
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Term
| continuous strand elongation |
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Definition
| new strand= leading strand for each template strand is made in 1 piece beginning at origin |
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Term
| discontinuous strand elongation |
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Definition
| another strand= lagging strand for each template strand is synthesized in sections |
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Definition
| replaces RNA primers with DNA nucleotides |
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Definition
| completes gaps in sugar phosphate backbone |
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