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The Rise of Genomics AP Biology Fall 2010
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The Human Genome Project With the invention of PCR and automated sequencing, scientists argued for the sequencing of the human genome in 1986 Beginning in 1988, NIH directed the public effort in many laboratories to sequence the human genome
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The Human Genome Project In the late 1990’s, Craig Venter launched his effort at genome sequencing using powerful automated sequencing machines Sequencing was officially completed in 2003
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The Human Genome Project 99% the coding of human DNA has been deciphered with accuracy Researchers found far fewer genes than they expected- just over 20,000
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The Human Genome Project The next step is to determine what the genes encode Fewer than 2% of our genome is protein- encoding genes And there are many inactivate pseudogenes
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Genomics The new field of genomics will be concerned with mapping and sequencing the genomes As well as elucidating the possible evolutionary relationships of groups of organisms
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Genomics Structural Genomics: deals with the actual mapping and sequencing of genomes of individuals
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Genomics Comparative Genomics: concerned with finding evolutionary relationships among groups of organisms
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Genomics Genomics has the potential for human gene therapy The transfer of modified genes into a person’s body cells to correct a genetic defect
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DNA Chips Microarrays or gene chips: can reveal a stunning amount of information about an individual’s DNA
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DNA Chips These small devices, holding thousands of known DNA sequences, are bathed with RNA transcripts from a suspect cell Binding and fluorescence reveal which genes are active/inactive DNA chips are being used to compare different gene expression patterns between cells
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