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Beadle and Ephrussi’s Technique to Transplant Optic Discs between Fruit Fly Larvae
By: Amy Pribadi
| Published: Oct 11, 2016
In 1935, George Beadle and Boris Ephrussi developed a technique to transplant optic discs between fruit fly larvae.
Fruit-fliesImaginal DisksGeneticsdevelopmentMetamorphosis, Biological
Neurospora crassa
By: Amy Pribadi
| Published: Oct 11, 2016
Neurospora crassa is a red mold that scientists use to study genetics. N.
Neurospora crassaMicrobiologyMicroscopyCulture MediaMolds
Beadle and Ephrussi Show that Something Besides Eye Tissue Determines Eye Color in Fruit Flies
By: Amy Pribadi
| Published: Oct 11, 2016
In the 1930s, George Beadle and Boris Ephrussi discovered factors that affect eye colors in developing fruit flies.
Fruit-fliesImaginal DisksGeneticsdevelopmentMetamorphosis, Biological
Paul Kammerer's Experiments on Sea-squirts in the Early Twentieth Century
By: Federica Turriziani Colonna
| Published: Apr 13, 2015
In the early twentieth century, Paul Kammerer, a zoologist working at the Vivarium in Vienna, Austria, experimented on sea-squirts (Ciona…
Sea SquirtsCiona intestinalisKammerer, Paul, 1880-1926Laboratory animals--Breeding--ExperimentsAdaptation
Study of Fossilized Massospondylus Dinosaur Embryos from South Africa (1978-2012)
By: Madison Paige
| Published: Mar 31, 2015
In 1978, James Kitching discovered two dinosaur embryos in a road-cut talus at Roodraai (Red Bend) in Golden Gate Highlands National Park, South…
ContextDinosaursDinosaurs--EggsMassospondylus carinatusMassospondylus
Oviraptor philoceratops Dinosaurs
By: Madison Paige
| Published: Feb 11, 2015
Oviraptor philoceratops was a small bird-like dinosaur that lived about seventy-five million years ago, during the late Cretaceous period. In 1923,…
OviraptorDinosaurs--EggsNatural history museumsPaleobiologyEvolutionary paleobiology
Wolbachia
By: Karine Prevot
| Published: Jan 29, 2015
Bacteria of the genus Wolbachia are bacteria that live within the cells of their hosts. They infect a wide range of arthropods (insects, arachnids…
WolbachiaBacteriaHost-bacteria relationshipsHost-parasite relationshipsArthropods
The Southern Gastric-Brooding Frog
By: Christopher Rojas
| Published: Jan 26, 2015
The Southern Gastric-Brooding Frog (Rheobatrachus silus) was an aquatic frog that lived in south-east Australia. In 2002, the International Union…
Sexual behavior in animalsReproductive BehaviorExtinction (Biology)Extinct animalsCloning
Intraspecies Chimeras Produced in Laboratory Settings (1960-1975)
By: Sarah Taddeo
| Published: Nov 25, 2014
When cells-but not DNA-from two or more genetically distinct individuals combine to form a new individual, the result is called a chimera. Though…
ContextChimerismEmbryosEmbryonic Stem CellsMosaicism
Lysogenic Bacteria as an Experimental Model at the Pasteur Institute (1915-1965)
By: Valerie Racine
| Published: Oct 10, 2014
Lysogenic bacteria, or virus-infected bacteria, were the primary experimental models used by scientists working in the laboratories of the Pasteur…
ContextInstitut Pasteur (Paris, France)BacteriaEscherichia coliMonod, Jacques