Now showing items 1-7 of 7

    • Beadle and Ephrussi Show that Something Besides Eye Tissue Determines Eye Color in Fruit Flies 

      Pribadi, Amy (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2016-10-11)
      In the 1930s, George Beadle and Boris Ephrussi discovered factors that affect eye colors in developing fruit flies. They did so while working at the California Institute of Technology in Pasadena, California. (1) They took ...
    • Beadle and Ephrussi’s Technique to Transplant Optic Discs between Fruit Fly Larvae 

      Pribadi, Amy (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2016-10-11)
      In 1935, George Beadle and Boris Ephrussi developed a technique to transplant optic discs between fruit fly larvae. They developed it while at the California Institute of Technology in Pasedena, California. Optic discs are ...
    • Beadle and Tatum's 1941 Experiments with Neurospora Revealed that Genes Produce Enzymes 

      Pribadi, Amy (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2016-10-12)
      This illustration shows George Beadle and Edward Tatum's experiments with Neurospora crassa that indicated that single genes produce single enzymes. The pair conducted the experiments at Stanford University in Palo Alto, ...
    • Beadle's One Gene-One Enzyme Hypothesis 

      Pribadi, Amy (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2016-10-12)
      Between 1934 and 1945, George Beadle developed a hypothesis that each gene within the chromosomes of organisms each produced one enzyme. Enzymes are types of proteins that can catalyze reactions inside cells, and the figure ...
    • Fruit Fly Life Cycle 

      Pribadi, Amy (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2016-10-11)
      Fruit flies of the species Drosophila melanogaster develop from eggs to adults in eight to ten days at 25 degrees Celsius. They develop through four primary stages: egg, larva, pupa, and adult. When in the wild, female ...
    • Neurospora crassa 

      Pribadi, Amy (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2016-10-11)
      Neurospora crassa is a red mold that scientists use to study genetics. N. crassa commonly grows on bread as shown in the top left corner of this figure. To culture the mold in lab, researchers grow it in glassware such as ...
    • Neurospora crassa Life Cycle 

      Pribadi, Amy (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2016-10-12)
      This diagram shows the life cycle of Neurospora crassa, a mold that grows on bread. N. crassa can reproduce through an asexual cycle or a sexual cycle. The asexual cycle (colored as a purple circle), begins in this figure ...