<prompt> Which of the following pa of corpus callosum develops firstDorsal pa of genuVentral pa of genuRostrumSplenium  <response>: Ans. is a i.e., Dorsal pa of genuDuring development of corpus callosum, the dorsal pa of genu and the bodytrunk form first.Subsequently, ventral anterior pa of genu and then the splenium arise.Last, the rostrum develops. 