Answers are grounded in this paper and cite their sources.
By analyzing the hearts of quail-chick chimeras, it was found that neural crest cells at the level of occipital somites 1 to 3 migrate to the region of the aorticopulmonary septum. Bilateral removal of this neural crest population prior to migration causes malformation of the aorticopulmonary septum resulting in common arterial outflow channels or transposition of the great vessels.
No takes yet. Share an insight, caveat, or question.
Kirby et al. (1983) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: