This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': 'Hemiveebra is a defect of \nSelect and explain. \nA. Body, B. Transverse process, C. Spine, D. Posterior veebral arches', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Veebral bodies mainly develop from ventral sclerotome (VS) & thus hemiveebra is a defect of VS Hemiveebra can lead to defects in the veebral column - scoliosis. Posterior veebral arches (PVA) contribute mainly to the lamina & spines. PVA are contributed by the dorsal sclerotome.', 'role': 'assistant'}]