biology

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 [6] 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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Alfred Sturtevant and the Chromosomes

Alfred Sturtevant and the Chromosomes

On November 21, 1891, American geneticist Alfred Henry Sturtevant was born. Sturtevant constructed the first genetic map of a chromosome in 1913. Throughout his career he worked on the organism Drosophila melanogaster with Thomas Hunt Morgan. By watching the development of flies in which the earliest cell division produced two different genomes, he measured the embryonic distance between organs in a unit which is called the sturt in his honor. Alfred Sturtevant…
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Réaumur – the Entomologist and the Temperature Scale

Réaumur – the Entomologist and the Temperature Scale

On October 17, 1757, French entomologist and physicist René-Antoine Ferchault de Réaumur passed away. Réaumur contributed to many different fields, especially the study of insects. But, he is best known for having introduced the Réaumur temperature scale in 1730. Of course everybody has heard of Fahrenheit and Celsius. But, there exists a variety of different temperature scales, most prominent of them the perhaps absolute temperature scale of Lord Kelvin. But, although the other’s prevailed, Réaumur’s scale still…
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Peter Simon Pallas – A Pioneer in Zoography

Peter Simon Pallas – A Pioneer in Zoography

On September 22, 1741, German zoologist and botanist Peter Simon Pallas was born. Pallas was a pioneer in zoogeography by going beyond merely cataloging specimens with simple descriptions, but included observations of causal relationships between animals and their environment. He looked for hidden regularities in natural phenomena over an extreme range of habitats. Peter Simon Pallas – Early Years Pallas was born in Berlin, the son of Professor of Surgery Simon Pallas…
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Hans Christian Gram and the Gram Stain

Hans Christian Gram and the Gram Stain

On September 13, 1853, Danish bacteriologist Hans Christian Gram was born. Gram is best known for his development of the Gram stain, which differentiates bacteria by the chemical and physical properties of their cell walls by detecting peptidoglycan, which is present in a thick layer in gram-positive bacteria. Hans Christian Gram – Youth and Education Hans Christian Gram was the son of Frederik Terkel Julius Gram, a professor of jurisprudence, and Louise Christiane Roulund. In 1871,…
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Comte de Buffon and his Histoire Naturelle

Comte de Buffon and his Histoire Naturelle

On September 7, 1707, French naturalist, mathematician, cosmologist, and encyclopedic author Georges-Louis Leclerc, Comte de Buffon was born. Buffon formulated a crude theory of evolution and was the first to suggest that the earth might be older than suggested by the Bible. His works influenced the next two generations of naturalists, including Jean-Baptiste Lamarck [2] and Georges Cuvier.[6] “Truly, Buffon was the father of all thought in natural history in the second half of…
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Louis Leakey and the Human Evolutionary Development in Africa

Louis Leakey and the Human Evolutionary Development in Africa

On August 7, 1903, Kenyan paleoanthropologist and archaeologist Louis Seymour Bazett Leakey was born. Louis Leakey‘s work was important in establishing human evolutionary development in Africa, particularly through his discoveries in the Olduvai Gorge. We’ve already had posts about his wife Mary Leakey, as well as two other famous women, whose life is connected with Louis Leakey: Dian Fossey and Jane Goodall. Having been a prime mover in establishing a tradition of…
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Jean-Baptiste Lamarck and the Evolution

Jean-Baptiste Lamarck and the Evolution

On August 1, 1744, French naturalist Jean-Baptiste Lamarck was born. Lamarck was an early proponent of the idea that evolution occurred and proceeded in accordance with natural laws. He gave the term biology a broader meaning by coining the term for special sciences, chemistry, meteorology, geology, and botany-zoology. “Do we not therefore perceive that by the action of the laws of organization . . . nature has in favorable times, places, and climates multiplied…
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George Shaw and the unique Mammal Platypus

George Shaw and the unique Mammal Platypus

On July 22, 1813, English botanist and zoologist George Shaw passed away. Shaw published one of the first English descriptions with scientific names of several Australian animals including the very first scientific description of the platypus. “The reasonable man adapts himself to the world; the unreasonable man persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man.” – George Kearsley Shaw, as quoted in [9]…
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Sir Richard Owen and the Interpretation of Fossils

Sir Richard Owen and the Interpretation of Fossils

On July 20, 1804, English biologist, comparative anatomist and paleontologist Sir Richard Owen was born. Despite being a controversial figure, Owen is generally considered to have been an outstanding naturalist with a remarkable gift for interpreting fossils. Owen is probably best remembered today for coining the word Dinosauria (meaning “Terrible Reptile” or “Fearfully Great Reptile“). And today, dinosaurs seem to be more popular than ever, taking into account recent revenues of the latest sequel of…
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