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Theory of embryology - organizer theory, Biology
ORGANIZER THEORY -
It was propounded by spemann (1901).
He was given Nobel prize of 1935 for this wrok.
He studied the embryonic development of frog, newt & other amphibians.
He explained that a part of embryo secretes specific chemical which controls the differentiation of other tissues. The secretory tissues is called as inducer of organiser & the process is called as Induction.
Spemann studied frog's gastrula & explained that the dorsal lip or roof of archenteron acts as primary organiser.
Graham & Wareing supported the theory of organiser & stated that the induction is an intercellular process which controls morphogenesis & differentiation of embryo.
Posted Date: 10/3/2012 7:03:37 AM | Location : United States
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