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Genetics and the work of Greg Mendel
Gregor Johann Mendel was born in July 20, 1822. He was a German-speaking Silesian scientist and the founder of the modern science of genetics. Mendel's pea plant experiments established many of the rules of heredity, now referred to as the laws of Mendelian inheritance. Mendel worked with seven characteristics of pea plants: plant height, pod shape and color, seed shape and color, and flower position and color. -
The Chromosome theory
The Boveri–Sutton chromosome theory is a fundamental unifying theory of genetics which identifies chromosomes as the carriers of genetic material. Walter Sutton (left) and Theodor Boveri (right) independently developed the chromosome theory of inheritance.They explained the mechanism underlying the laws of Mendelian inheritance by identifying chromosomes with the paired factors required by Mendel's laws. -
Work of Morgan on sex-linkage
Thomas Hunt Morgan was born in September 25, 1866. He was an American evolutionary biologist, geneticist & embryologist.
He experimented with the fruit fly Drosophila melanogaster to find heritable mutations. In 1909, a series of heritable mutants appeared, some of which displayed Mendelian inheritance patterns. In 1911, he published that some traits were sex-linked, the trait was probably carried on one of the sex chromosomes, and other genes were probably carried on specific chromosomes. -
Molecular Structure of DNA
Francis Crick and James D. Watson discovered the molecular structure of DNA on 25 April 1953). In their publication, they described the discovery of the double helix structure of DNA.
