This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
[{'content': 'Karyotyping under light microscopy is done by \nSelect and explain. \nA. R banding, B. Q banding, C. G banding, D. C banding', 'role': 'user'}, {'content': 'Answer: C \nExplanation: G-banding, G banding, or Giemsa banding is a technique used in cytogenetics to produce a visible karyotype by staining condensed chromosomes.It is useful for identifying genetic diseases through the photographic representation of the entire chromosome complement.', 'role': 'assistant'}]