History of Genetics

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A timeline of important events in 'Genetics:

1856-1863: Gregor Mendel conducts experiments on gene segregation in pea plants.

1859: Charles Darwin publishes On the Origin of Species outlining his theory of natural selection.

1866: Gregor Mendel publishes research paper outlining principles of heredity.

1868: Fredrich Miescher isolates "nuclein" (later known as DNA) from cell nuclei.

1875: O. Hertwig shows that the nucleus is required for cell division and fertilisation.

1882-1885: E. Strasburger & Walther Flemming show that nuclei contain chromosomes.

1900: Hugo de Vries, Carl Correns & Erich von Tschermak-Seysenegg independently confirm Mendel's principles of heredity.

1902: Archibald Garrod identifies first genetic disease.

1903: William E. Castle recognises relationship between allele and genotypic frequencies.

1905: William Bateson names science of heredity "Genetics".

1905: William Bateson & R. C. Punnett demonstrate gene linkage.

1908: Godfrey H. Hardy & Wilhelm Weinberg formulate Hardy-Weinberg principle, mathematically relating the frequencies of genotypes and alleles in randomly mating populations.

1908: Herman Nilsson-Ehle obtains experimental proof for multigene inheritance being the basis of continuous traits.

1909: W. Johannsen coins the word "gene".

1910: Edward M. East elucidates role of sexual reproduction in evolution.

1910: Thomas Hunt Morgan finds first sex-linked gene: a gene for white eye-colour in Drosophila melanogaster.

1911: Thomas Hunt Morgan proposes theory that gene linkage is caused by genes being on the same chromosome.

1913: Alfred Sturtevant devises principle for constructing genetic linkage map.

1916: Thomas Hunt Morgan proposes theory relating mutation and selection.

1922: Ronald A. Fisher publishes examination of the evolutionary consequences of Mendelian inheritance.

1924-1932: John B. S. Haldane publishes mathematical theory of selection.

1927: Herman J. Müller shows that x-rays can cause mutation.

1928: Fredrick Griffith discovers genetic transformation of a bacterium, names agent responsible the "transforming principle".

1930: Ronald A. Fisher publishes The Genetical Theory of Natural Selection.

1930s: Sewall Wright lays down theoretical foundation for genetic drift.

1931: Harriet Creighton & Barbara McClintock show that recombination in maize plants is due to a physical exchange of homologous chromosomes.

1931: Curt Stern shows recombination in Drosophila is due to an exchange of chromosomes.

1941: George Beadle & Edward Tatum proposes the one gene-one enzyme hypothesis.

1944: Oswald Avery, Colin MacLeod & Maclyn McCarty show that Griffith's 1928 transforming principle is DNA.

1946: Joshua Lederberg & Edward Tatun discover conjugation in bacteria.

1950: Barbara McClintock publishes evidence of movable genes called transposable elements.

1952: Alfred Hershey & Martha Chase show that genetic material of bacteriophage T2 is DNA.

1953: James Watson & Francis Crick propose doubal helical structure of DNA

1957: Helnz Fraenken-Conrat & B. Singer show genetic material of tobacco mosaic virus is RNA.

1958: Matthew Meselson & Franklin Stahl prove semi-conservative model for DNA replication.

1959: Severo Ochoa discovers first RNA polymerase.

1961: Sidney Brenner, François Jacob & Matthew Meselson discover messenger RNA.

1961: François Jacob & Jacques Monod put forward operon model for regulation of gene expression in bacteria.

1965: Robert Holley obtains first tRNA nucleotide sequence.

1966: Marchall Nirenberg & H. Gobind Khorana work out complete genetic code.

1972: Paul Berg constructs recombinant DNA molecule.

1973: Herb Boyer & Stanley Cohen use plasmid to code DNA.

1975: Edward M Southern develops method for transferring DNA fragments separated in a gel to a filter, providing a technique for identifying clones of genes.

1977: Walter Gilbert & Frederick Sanger devise methods for sequencing DNA.

1977: Phillip Sharp et al discover introns in eukaryotic DNA.

1977: Frederick Sanger obtains complete nucleotide sequence of bacteriophage øX174.

1983: Thomas Cech & Sidney Altman discover self-splicing of RNA at introns.

1986: Kary Mullis et al develop polymerase chain reaction.

1989: L. C. Tsul, John Riordan & Francis Collin identify and clone the gene responsible for cystic fibrosis.

1990: James Watson et al launch the Human Genome Project, planing to sequence the DNA of genetically important organisms, including humans.

1993: The Huntington's Disease Collaborative Research Group discover genetic basis for the disease.

1994: M. Skolnick et al discover some genetic basis for breast cancer and clone gene BRCA1.

1996: Genome Project publishes DNA sequence of first eukaryote: Saccharomyces cerevisiae; complete sequence of archaeon Methanococcus jannaschii confirming that archaea are third major branch of life distinct from eukaryotes and prokaryotes.

1996: Gene therapy trials approved in the USA.

1997: The Roslin Institute produce first cloned mammal, Dolly the sheep.

1997: Genome Project publishes DNA sequence of Escherichia coli.

1998: Genome Project publishes DNA sequence of Caenorhabditis elegans.

1999: Genome Project announce completion of sequencing of human chromosome 22.

2000: Genome Project' publishes DNA sequence of Drosophila melanogaster fruit-fly.

2001: Genome Project announce "working draft" of human DNA sequence completed.

2003: Genome Project complete DNA sequncing of human DNA and begin investigating the functions of each codon.

This page is part of the EvoWiki encyclopedia of genetics and molecular biology.

Topics: Genetics - Transmission genetics - Molecular genetics - Population genetics - Quantitative genetics - Molecular biology - Genomics
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