Number of cell divisions before midblastula transition (MBT)

Range 12 diploid cell: 13 haploid cell Divisions
Organism African clawed frog Xenopus laevis
Reference Wang P, Hayden S, Masui Y. Transition of the blastomere cell cycle from cell size-independent to size-dependent control at the midblastula stage in Xenopus laevis. J Exp Zool. 2000 Jul 1 287(2):128-44. p.140 left column bottom paragraphPubMed ID10900432
Comments Blastomeres divide synchronously at about 30 min intervals up to the 12th cleavage for diploid cells and up to the 13th cleavage for haploid cells.
Entered by Uri M
ID 107648