Frühstart at the midblastula transition.
D000818:Animals; D036703:Blastula / Q000166:cytology / Q000502:physiology*; D004331:Drosophila melanogaster / Q000166:cytology / Q000235:genetics; D004625:Embryo, Nonmammalian / Q000166:cytology; D014158:Transcription, Genetic; D014982:Xenopus laevis / Q000196:embryology* / Q000235:genetics; D015053:Zygote / Q000502:physiology