S – I : Chromosomes are evenly stained when stained with acetocarmine S – II : Both heterochromatin and euchromatin regions are genetically active

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S – I : Chromosomes are evenly stained when stained with acetocarmine
S – II : Both heterochromatin and euchromatin regions are genetically active

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Both S I and S II correct

Both S I and S II wrong

S I is correct S II is wrong

S I is wrong S II is correct

answer is B.

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Detailed Solution

Chromosomes show heteropycnosis meaning some chromosomes or of parts of some chromosomes in a nucleus of taking up more stain and being more tightly coiled or of taking up less stain and being less tightly coiled than is usual.

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