This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Microscopic examination of chromosomes shape, size and arrangement is known as 
Select and explain. 
A. Chromosomal mapping, B. Karyotyping, C. Inheritance testing, D. Genotyping
B: Karyotyping
Answer: B: Karyotyping 
Explanation: None