{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lec63%20Seaurchin - .JaneOppenheimer .ScottGilber

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
3/9/09 1 Fertilization and Early Development “The greatest progressive minds of embryology have not looked for hypotheses; they have looked at embryos.” Jane Oppenheimer “The questions asked by developmental biologists are often questions about becoming rather than about being.” Scott Gilbert George von Dassow, Univ. of Washington http://goblet.molgen.mpg.de/cgi‐bin/seaurchin‐insitubase.cgi SimonWuandDavid McClay,DukeUniv. Fertilization and Early Development George von Dassow, Univ. of Washington http://goblet.molgen.mpg.de/cgi‐bin/seaurchin‐insitubase.cgi Simon Wu and David McClay, Duke Univ. Phylogeny Sea Urchin Biology Sea Urchins as Model Organisms Fertilization Cleavage Gastrulation Green algae Opisthokonts Excavata Chromalveolata Rhizaria Archaeplastida Landplants Unikonta Fungi Animals Eukaryotic Lineages Animal Phylogeny (Metazoa) Basal Metazoa Deuterostomia Protostomia Ancestral Colonial Flagellate Bilateria Bilateral symmetry Three germ layers (triploblastic) Echinodermata Chordata Lophotrochozoa Ecdysozoa Water vascular system Radial symmetry in adults Calcareous endoskeleton Sea Urchin Biology Planet Earth – BBC video (2007) Narrated by David Attenborough Sea Urchins – Model Organisms for Fertilization and Early Development External fertilizers Easily produce many synchronously developing embryos Transparency of eggs and embryos Closest known relatives of the chordates (sister group)
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern