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
In karyotyping chromosomes are visualized through light microscope with resolution of 
Select and explain. 
A. 5 Kb, B. 500 Kb, C. 5 Mb, D. 50 Mb
C: 5 Mb
Answer: C: 5 Mb 
Explanation: Using Karyotypes to Diagnose Genetic Disorders. Using Karyotypes to Diagnose Genetic Disorders. A regular human cell has 46 chromosomes: 44 autosomes, which come in pairs, and 2 sex chromosomes, which specify gender (XX for female and XY for male). The pairs of autosomes are called "homologous chromosomes Ref-Harpers illustrated biochemistry 30/e p582