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History, DNA replica

History, DNA Replication

QuestionAnswer
Bacterial Transformation Griffith performed experiments on mice and bacterial strains. Discovered that bacterai have the ability to transform harmless cells into virulent ones.
Transformation Factor is DNA Avery, MacLoud, McCarty proved DNA was the agent that carried genetic characteristics from virulent dead bacteria to living nonvirulent bacteria
DNA not protein coat infecting bacteria Hershey and Chase tagged the protein coat and the DNA bacteriaphages with radioisotopes to trace the path of the bacteriophage.
DNA in helix pattern Rosiland Franklin. X-ray crystallography analysis of DNA.
Double helix model of DNA Watson and Crick constructed model of DNA based on findings of other scientist.
DNA replicates in a semiconsertative fashion Meselsohn and Stahl cultured bacteria with heavy and light nitrogen to trace DNA as it replicated and divided.
DNA double stranded polymer of repeating units of nucleotides
adenine, thymine, cytosine, guanine nitrogen bases that are part of the DNA nucleotides
Hydrogen bonds bond that hold the DNA bases together
antiparallel term used to describe the direction of complimentary DNA strands
RNA single stranded polymer of repeating units of nucleotides
Uracil replaces thymine in RNA
Template strand single strand of DNA used for replication
replication fork at end of replication bubble,y-shaped region where elongation occurs
DNA polymerase enzyme that catalyzes elongation of new DNA strands. new strand built from 5' to 3', proofreads new strand
RNA Primer preexisting chain of RNA used in DNA replication
Primase enzyme, joins RNA nucleotided to make RNA primer
Helicase enzyme, untwist the double helix at replication fork
telomere found in Eukaryotes, nonsense nucleotide sequences at END of chromosome, protection against the loss of gene codes during replication
telomerase enzyme, create and maintain telomeres
DNA ligase joins Okazaki fragemnts that are replicating away from the replication fork
Created by: adcteacher
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