organizer theory -it was propounded by spemann
ORGANIZER THEORY -
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germ plasm theory -it was proposed by weismannaccording to it two types of cells are formed during embryonic development viz - germ cell amp somatic
mosaic thoery -it was given by w rouxhe studied the development of frogs egg he destroyed one cells by a hot needle out of 2-cells formed as a result
regulative theoryit was propounded by hens drieschhe performed experiments on the eggs of sea urchin similar to the experiments performed by rouxhe
gradient theory -it was given by t boveri amp was supported by mc childchild called it as metabolic axial gradient theoryaccording to it the egg has
organizer theory -it was propounded by spemann 1901he was given nobel prize of 1935 for this wrokhe studied the embryonic development of frog newt
germ layer theory -proposed by pander studied chick embryo developmentcoined the term ectoderm mesoderm amp
theory of pangenesis -proposed by charles darwinaccording this miniature present in the every body cell ie called
branches of embryology-1 descriptive embryologythis field of embryology is associated with the morphological description of
fundamental characters of embryonic development1 gametogenesis-testes amp ovaries are collectively called as gonads similarly
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