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BI820: Seminar in Quantitative and Computational Problems in Genomics

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Presentation on theme: "BI820: Seminar in Quantitative and Computational Problems in Genomics"— Presentation transcript:

1 BI820: Seminar in Quantitative and Computational Problems in Genomics
The Sequence of the Human Genome J Craig Venter, et al. Science (2001) Dean Wagner BI820: Seminar in Quantitative and Computational Problems in Genomics 1/27/04

2 Why sequence the human genome?
To Understand: human evolution disease environment/ heredity

3 History ? Venter, et al. Science 291, 1304 (2001) 1998 PE Biosystems
Mya Homo habilis 1987 Applied Biosystems 13.7Bya Universe Formed 1977 Sanger 1985 Sinsheimer 1995 H. influenzae 6/17/00 1865/1900 Mendel 9/8/99 ? Seeburg, et al. Celera 10/1/00 4-5Mya Ardipithecus ramidus 1986 Hood, et al. 1997 Weber and Myers 1953 Watson and Crick 1982 Bacteriophage  5/99 Dm 120,000ya Homo sapiens (modern) 2000 Drosophila 1990 HGP ISGSC Nature 409, 860 (2001)

4 Sanger Inst.

5 Sanger Inst.

6 Why WGS Can’t Be Done Against a Whole Genome Shotgun Phillip Green Genome Research 7, 410 unable to finish error prone unable to distinguish pseudogenes Repeats SNPs or errors logistics high cost

7 How WGS Can Be Done Genomic Mapping by Fingerprinting Random Clones: A Mathematical Analysis Eric S. Lander and Michael S. Waterman Genomics 2, 231 {e-cf()d }-1[ -1-  L e -c/(1- e -c)f(L, )dLd ]+  L(1- )f(L, )dLd  Proof: 4(1/22)k+ 4(1/22)k+1+ 4(1/22)k (1/22)k(1+ 4(1/22)

8 Results >26,000 protein-encoding transcripts ~12,000 more?
2.1M SNPs <1% SNPs variation in proteins 1/1,250nt difference be individuals

9 Compare WGS Clone by Clone speed accuracy cost modularity
early broad samplings Clone by Clone accuracy modularity target regions


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