Gregor Mendel

August Weismann – the Founder of Neo-Darwinism

August Weismann – the Founder of Neo-Darwinism

On January 17, 1834, German evolutionary biologist Friedrich Leopold August Weismann was born. He is considered the second most notable evolutionary theorist of the 19th century, after Charles Darwin, and one of the founders of Neo-Darwinism. “When we are confronted with facts which we see no possibility of understanding save on a single hypothesis, even though it be an undemonstratable one, we are naturally led to accept the hypothesis, at least until a better…
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J. B. S. Haldane and population Genetics

J. B. S. Haldane and population Genetics

On November 5, 1892, English geneticist and biometrician John Burdon Sanderson Haldane was born. Haldane is known for his work in the study of physiology, genetics, evolutionary biology, and in mathematics, where he made innovative contributions to the fields of statistics and biostatistics. “My own suspicion is that the universe is not only queerer than we suppose, but queerer than we can suppose.” — J. B. S. Haldane Youth and Education John…
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Carl Correns and the Principles of Heredity

Carl Correns and the Principles of Heredity

On September 19, 1864, German botanist and geneticist Carl Erich Correns was born. Correns is notable primarily for his independent discovery of the principles of heredity, and for his rediscovery of Gregor Mendel‘s earlier paper on that subject, which he achieved simultaneously but independently of the botanists Erich Tschermak and Hugo de Vries, and the agronomist William Jasper Spillman.[5] Family and Academic Carreer Carl Correns came from a family of lawyers in the…
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The Fruit Breeding of Thomas Andrew Knight

The Fruit Breeding of Thomas Andrew Knight

On August 12, 1759, English horticulturalist and botanist Thomas Andrew Knight was born. Knight initiated the field of fruit breeding, experimental horticulture while also studying plant physiology with botanical experiments. He made studies on the movement of sap in plants, the nature of the cambium, and phototropism in tendrils. To investigate the geotropism of roots and stems, he invented a machine, rotating to simulate gravity with centrifugal force in either horizontal or vertical position. The…
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William Bateson and the Study of Heredity

William Bateson and the Study of Heredity

On August 8 1861, English biologist William Bateson was born. Bateson was the first person to use the term genetics to describe the study of heredity, and the chief populariser of the ideas of Gregor Mendel following their rediscovery in 1900 by Hugo de Vries and Carl Correns. William Bateson was born in Whitby on the Yorkshire coast, the son of William Henry Bateson, Master of St John’s College, Cambridge. He was educated…
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Theodosius Dobzhansky and the Unifying modern Evolutionary Synthesis

Theodosius Dobzhansky and the Unifying modern Evolutionary Synthesis

On January 25, 1900, American geneticist and evolutionary biologist Theodosius Dobzhansky was born. Dobzhansky was a central figure in the field of evolutionary biology for his work in shaping the unifying modern evolutionary synthesis. He made the first significant synthesis of Charles Darwin‘s theory of evolution with Gregor Mendel‘s theory of genetics in his book Genetics and the Origin of Species (1937). “[Evolution] is a general postulate to which all theories, all…
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Barbara McClintock and Cytogenetics

Barbara McClintock and Cytogenetics

On June 16, 1902, American cytogeneticist Barbara McClintock was born. She is one of the world’s most distinguished cytogeneticists and received the 1983 Nobel Laureate in Physiology or Medicine. Maybe, first of all you might ask, what is cytogenetics. Well, cytogenetics is a branch of genetics that is concerned with the study of the structure and function of the cell, especially the chromosomes. Chromosomes, as being a single piece of coiled DNA…
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Gregor Mendel and the Rules of Inheritance

Gregor Mendel and the Rules of Inheritance

On February 8, 1865, German-speaking Silesian scientist and Augustinian friar Gregor Mendel publishes his “Versuche über Pflanzenhybride” (Experiments on Plant Hybridization) in which he describes his experiments with peas, which later became the foundation of the so-called Mendelian inheritance of genetics. Mendel grew up in a farmer’s family and cultivated bees from early ages. From 1840 to 1843, he studied practical and theoretical philosophy and physics at the Philosophical Institute of the University…
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