Bigger brains cycle faster before neurogenesis begins: a comparison of brain development between chickens and bobwhite quail.

The chicken brain is more than twice as big as the bobwhite quail brain in adulthood. To determine how this species difference in brain size emerges during development, we examined whether differences in neurogenesis timing or cell cycle rates account for the disparity in brain size between chickens and quail. Specifically, we examined the timing of neural… (More)