Fig. 3From: Cleavage modification did not alter blastomere fates during bryozoan evolutionCleavage pattern and orientation of the embryonic axes of M. membranacea. Quadrant identity was determined backwards from 4D microscopy recordings and we do not know if it is determined before the 16-cell stage. The nomenclature was adapted from the spiral cleavage notation to describe the peculiarities of bryozoan cleavage. See Methods for detailsBack to article page