This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Techniques in molecular biology, Subject name: Biochemistry
Banding technique most commonly employed for cytogenetic analysis 
Select and explain. 
A. G banding, B. C banding, C. R banding, D. Q banding
A: G banding
Answer: A: G banding 
Explanation: G-banding (most common) R-banding Q-banding C-banding T-banding G stands for Giemsa R stands for "reverse" Q stands for Quinacrine Fluoroescent dye C stands for Constitutive heterochromatin or Centromere T stands for telomeres to produce a visible karyotype Dark regions are heterochromatin (AT) Light regions are Euchromatin (GC) Dark regions are euchromatin Bright regions are heterochromatin