This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics, Subject name: Pathology
Karyotyping is done for: 
Select and explain. 
A. Chromosomal disorders, B. Autosomal recessive disorders, C. Autosomal dominant disorders, D. Linkage disorders
A: Chromosomal disorders
Answer: A: Chromosomal disorders 
Explanation: Karyotyping Study of chromosomes. Chromosomes are arrested in metaphase by Colchicine Most commonly used stain is Giemsa stain, so called G-band. Chromosomes are arranged in order of decreasing length Any alteration in number or structure of chromosomes can be easily detected by karyotyping.