480.Hirschsprung's disease indicates a developmental abnormality in which of the following embryonic tissues?

 A. Ectoderm
B. Endoderm
C. Neural crest
D. Neural ectoderm

Ans-c.Neural crest

The baby has Hirschsprung's disease, which is due to an absence of
ganglion cells in the wall of the colon. Neural crest cells contribute to the formation of many adult
structures. Among these are all of the postganglionic neurons of the autonomic nervous system and
the sensory neurons of the peripheral nervous system.

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