Now showing items 1-12 of 12

    • Ectoderm 

      MacCord, Kate (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2013-12-03)
      Ectoderm is one of three germ layers--groups of cells that coalesce early during the embryonic life of all animals except maybe sponges, and from which organs and tissues form. As an embryo develops, a single fertilized ...
    • Endoderm 

      MacCord, Kate (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2013-11-17)
      Endoderm is one of the germ layers-- aggregates of cells that organize early during embryonic life and from which all organs and tissues develop. All animals, with the exception of sponges, form either two or three germ ...
    • Germ Layers 

      MacCord, Kate (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2013-10-03)
      A germ layer is a group of cells in an embryo that interact with each other as the embryo develops and contribute to the formation of all organs and tissues. All animals, except perhaps sponges, form two or three germ ...
    • Julia Barlow Platt's Embryological Observations on Salamanders' Cartilage (1893) 

      Ramirez, Karina
      In 1893, Julia Barlow Platt published her research on the origins of cartilage in the developing head of the common mudpuppy (Necturus maculosus) embryo. The mudpuppy is an aquatic salamander commonly used by embryologists ...
    • Karl Ernst von Baer's Laws of Embryology 

      Barnes, M. Elizabeth (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2014-04-15)
      In 1828, while working at the University of Konigsberg in Konigsberg, Germany Karl Ernst von Baer proposed four laws of animal development, which came to be called von Baer's laws of embryology. With these laws, von Baer ...
    • The Meckel-Serres Conception of Recapitulation 

      O'Connell, Lindsey (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2013-07-10)
      Johann Friedrich Meckel and Antoine Etienne Reynaud Augustin Serres developed in the early 1800s the basic principles of what later became called the Meckel-Serres Law. Meckel and Serres both argued that fetal deformities ...
    • Mesoderm 

      MacCord, Kate (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2013-11-26)
      Mesoderm is one of the three germ layers, groups of cells that interact early during the embryonic life of animals and from which organs and tissues form. As organs form, a process called organogenesis, mesoderm interacts ...
    • Ontogeny and Phylogeny (1977), by Stephen Jay Gould 

      Barnes, M. Elizabeth (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2014-10-21)
      Ontogeny and Phylogeny is a book published in 1977, in which the author Stephen J. Gould, who worked in the US, tells a history of the theory of recapitulation. A theory of recapitulation aims to explain the relationship ...
    • The Origin of Species: "Chapter Thirteen: Mutual Affinities of Organic Beings: Morphology: Embryology: Rudimentary Organs" (1859), by Charles R. Darwin 

      Barnes, M. Elizabeth (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2014-07-11)
      Mutual Affinities of Organic Beings: Morphology: Embryology: Rudimentary Organs is the thirteenth chapter of Charles Darwin's book The Origin of Species, first published in England in 1859. The book details part of Darwin's ...
    • De ovi mammalium et hominis genesi (1827), by Karl Ernst von Baer 

      Turriziani Colonna, Federica
      De ovi mammalium et hominis genesi (On the Genesis of the Ovum of Mammals and of Men) is an 1827 pamphlet by Karl Ernst von Baer about the anatomical observation and description of the egg (ovum) of mammals, like dogs and ...
    • "The Spandrels of San Marco and the Panglossian Paradigm: A Critique of the Adaptationist Programme" (1979), by Stephen J. Gould and Richard C. Lewontin 

      Barnes, M. Elizabeth (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2014-11-14)
      The Spandrels of San Marco and the Panglossian Paradigm: A Critique of the Adaptationist Programme, hereafter called The Spandrels, is an article written by Stephen J. Gould and Richard C. Lewontin published in the ...
    • Thomas Henry Huxley (1825-1895) 

      Hauserman, Samantha (Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia., 2013-11-26)
      In nineteenth century Great Britain, Thomas Henry Huxley proposed connections between the development of organisms and their evolutionary histories, critiqued previously held concepts of homology, and promoted Charles ...