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  4. The genetically inactive and highly condensed region with tightly packed DNA which receives dark stain is

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Q. The genetically inactive and highly condensed region with tightly packed DNA which receives dark stain is

NTA AbhyasNTA Abhyas 2020Principles of Inheritance and Variation

Solution:

Heterochromatin is a tightly packed form of DNA or condensed DNA, which comes in multiple varieties. These varieties lie on a continuum between the two extremes of constitutive heterochromatin and facultative heterochromatin.