Term
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Definition
| unwinds parental double helix at replication forks |
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Term
| Single-strand binding protein |
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Definition
| binds to and stabilizes single-stranded DNA until it can be used as a template |
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Term
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Definition
| Relieves "overwinding" strain ahead of replication forks by breaking, swiveling, and rejoining DNA srands |
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Term
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Definition
| Synthesizes an RNA primer at 5' end of leading strand and of each Okazaki fragment of lagging strand |
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Term
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Definition
| Using parental DNA as a template, synthesizes new DNA strand by covalently adding nucleotides to the 3' end of a pre-existing DNA strand or RNA primer |
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Term
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Definition
| Removes RNA nucleotides of primer from 5' end and replaces them with DNA nucleotides |
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Term
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Definition
| Joins 3'end of DNA that replaces primer to rest of leading strand and joins Okazaki fragments of lagging strand |
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Term
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Definition
| segments that allow 5' end to be added to |
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Term
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Definition
| enzymes remove and replace incorrectly paired nucleotides that have resulted from replication errors |
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Term
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Definition
| enzyme that cuts out damaged DNA segment |
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Term
| Nucleotide Excision Repair |
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Definition
| a repair system that removes then correctly replaces a damaged segment of DNA using the undamaged strand as a guide |
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Term
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Definition
| tandemly repetitive DNA at the end of a eukaryotic chromosome's DNA molecule that protects the organism's genes from being eroded during the successive rounds of replication |
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Term
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Definition
| dense region of DNA in a bacterium |
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Term
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Definition
| interphase chromatin, visible as irregular clumps |
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Term
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Definition
| less compacted, more dispersed chromatin |
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Term
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Definition
| viruses that infect bacteria |
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