Start Encyclopedia69 Dictionary | Overview | Topics | Groups | Categories | Bookmark this page.
dictionary -  encyclopedia  
Full text search :        
   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   #   



Germ Layer Theory

  The germ layer theory, in the life sciences, is the idea that all embryos are composed of distinct layers which give rise to particular tissues in the adult. It was proposed by Karl von Baer (1792 - 1876) and represented a departure from the previous idea of preformation (see embryology). The theory was extensively modified with the advent of cell theory and evolution theory, but it is still accepted that an embryo has three germ layers. However, these do not originate or develop in the same way in all organisms. RB  



Bookmark this page:



<< former term
next term >>
Germ Plasm Theory


Other Terms : Chorus | World Religions | Histology
Home |  Add new article  |  Your List |  Tools |  Become an Editor |  Tell a Friend |  Links |  Awards |  Testimonials |  Press |  News |  About |
Copyright ©2009 GeoDZ. All rights reserved.  Terms of Use  |  Privacy Policy  |  Contact Us