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Genetics Transcription & Translation
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Genetics 1800’s – Mendel showed traits are hereditary
1950’s – scientists showed genes are made of small segments of DNA 1953: Watson and Crick won the Nobel Prize for their model of DNA
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The Double Helix - DNA
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DNA Replication Semi-conservative
DNA unwinds, two sides split, new nucleotides are added DNA Polymerase proofreads. Why is this critical?
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Differences in DNA Replication
Eukaryotic cells can replicate their DNA faster than prokaryotes can. It takes ~8 hours for a cell to replicate its DNA in humans.
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Gene Expression The manifestation of genes into specific traits
Produces proteins by transcription and translation Central Dogma: DNA RNA Proteins
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Part One: Transcription
Nucleus mRNA is made from DNA *** RNA bases: adenine, guanine, cytosine, and uracil ***
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Part One: Transcription
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Part Two: Translation Cytoplasm and ribosome
Proteins are made from mRNA with the help of tRNA and rRNA
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Part Two: Translation Does one gene code for one trait?
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Codon vs. Anticodon What is the difference between a codon and an anticodon? How are codons and anticodons similar?
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