Chapter 8 - From DNA to Protein Chapter 8 Terminology...

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Unformatted text preview: From DNA to Protein Chapter 8 Terminology Genetics Genome Chromosome Gene Locus Alleles Genotype/Phenotype Heredity The single chromosome of E. coli 4.6 million base pairs Living cells must accomplish two general tasks to multiply and survive DNA replication Gene expression Expression involves two process Transcription Translation Flow of information from DNA to RNA to protein Polymer of nucleotides Hydrogen bonds between complementary bases AT and CG antiparallel DNA One DNA double helix. Semi-conservative DNA replication Two identical DNA double helixes, each with one parental strand (blue) and one new strand (pink). Replication produces two DNA double helixes, each with one original strand and one new strand DNA Helicase Enzyme unwinds DNA double helix DNA polymerases Set of enzymes that adds new nucleotides to growing strands; proofreads new strands DNA Ligase Joins together fragments of DNA DNA Replication As the strands of DNA unwind, it creates an area of replication called the replication fork As nucleotides are added, the replication fork moves down the parental strand DNA Replication Specifics of DNA replication Leading strand Is synthesized CONTINUOUSLY as the DNA polymerase moves towards the replication fork Lagging strand Is synthesized DISCONTINUOUSLY in pieces as DNA polymerase moves away from the replication fork DNA Replication...
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This note was uploaded on 02/21/2008 for the course BIOLOGY 380 taught by Professor Littlejohn during the Spring '06 term at University Of Southern Mississippi .

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Chapter 8 - From DNA to Protein Chapter 8 Terminology...

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