Which stain is commonly used to reveal the banding pattern of human chromosomes?
AGram stain
BGiemsa stain
CIodine stain
DMethylene stain
Answer & Solution
Correct answer: B. Giemsa stain
1. Chromosomes are stained so their distinct and reproducible banding patterns can be seen.
2. A common stain choice is the Giemsa stain.
3. Giemsa staining produces hundreds of bands across the 23 chromosome pairs.
4. An experienced geneticist can identify each band, which is how chromosomes are told apart.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 13 "Modern Understandings of Inheritance", section 13.2 Chromosomal Basis of Inherited Disorders_
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