A fetus possesses a mutation that causes the forebrain region of the developing brain to cease growing. Which structures in the mature brain will be missing/abnormal if the fetus survives to birth and childhood?
A)Midbrain
B)Pons
C)Cerebellum
D)Thalamus

Question

Quizplus · Accepted Answer

The forebrain, also known as the prosencephalon, gives rise to several important structures including the thalamus, hypothalamus, and cerebral cortex. If there is a mutation causing the forebrain to stop growing during development, it is likely that structures derived from this region will be missing or abnormal. Of the structures listed, only the thalamus is derived from the forebrain. The midbrain, pons, and cerebellum are all derived from the hindbrain (or rhombencephalon) and would not be affected by a mutation in the forebrain.

A Fetus Possesses a Mutation That Causes the Forebrain Region