QueenBeBe4603 QueenBeBe4603

02-10-2017
Biology

contestada

During chick gastrulation, what germ-layer regions remain external and do not move inward?

Respuesta :

13-10-2017

Opaca and Marginal zone stays outer and does not move during chick gastrulation, The zone opaca is a thick fringe ring comprising of more than one cell, it is joined to the germ wall. The Marginal zone lies at the fringe between the range opaca and the region pellucida

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