DNA Timeline
The DNA timeline really starts in 1866 with Mendel's theories of DNA Genealogy. 1869 DNA is identified by Friedrich Miescher as an acidic substance found in cell nuclei. The significance of DNA is not appreciated for over 70 years. 1900 Mendel's experiments from 1866 are "rediscovered" and confirmed, the study of heredity.
1902 The chromosome theory of heredity is proposed. 1905 Some genes are linked and do not show independent assortment. 1910-11 The chromosome theory of heredity is confirmed in studies of fly eye color inheritance. 1913 First ever linkage map created. 1925-27 X-rays induce mutations in a dose-dependent fashion. 1944 DNA is the molecule that mediates heredity, most people were skeptical of these findings until 1952.
1950 In DNA, there are equal amounts of A and T, and equal amounts of C and G. However, the A+T to C+G ratio can differ between organisms. 1952 DNA is the molecule that mediates heredity, these results really convinced everyone. 1953 DNA is in the shape of a double helix. 1958 DNA replication is semi-conservative. 1966 The genetic code is cracked by a number of researchers.
1990's DNA fingerprinting, gene therapy, and genetically modified foods come onto the scene. 1995 Automated sequencing technology allows genome projects to accelerate. 1996-7 The first cloning of a mammal (Dolly the sheep) is performed. 2000 The Drosophila genome is completed. The Arabidopsis genome is completed. The human genome is reported to be completed. 2001 The sequence of the human genome is released, and the "post-genomic era" officially begins. 2007 Controversies continue over human and animal cloning, research on stem cells, and genetic modification of crops. In 1997 DNA testing became available to people for Genealogy purposes. You can find your ancestral origins, ethnicity, living relatives, missing relatives, and much more.
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1902 A human disease is first
attributed to genetic causes.
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