When developmental pathways diverge.
D000818:Animals; D001516:Bees / Q000196:embryology* / Q000254:growth & development; D047108:Embryonic Development; D018507:Gene Expression Regulation, Developmental / Q000235:genetics*; D007605:Juvenile Hormones / Q000494:pharmacology; D007814:Larva / Q000254:growth & development; D009024:Morphogenesis / Q000235:genetics; D015398:Signal Transduction / Q000235:genetics; D014212:Tretinoin / Q000494:pharmacology