Development of Foetal Membranes in Amphioxus and Frog ! In vertebrate embryonic development only form a part of the egg or of cleavage mass of cells forms the actual embryo, while other parts lying outside the embryonic territory develop into extra-embryonic regions, called embryonic or foetal membranes. Embryonic membranes are auxiliary organs, which have arisen […]
Development of Foetal Membranes in Amphioxus and Frog | Biology
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