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In polytene chromosomes dark bands are visible. These bands are formed by the apposition of

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In polytene chromosomes dark bands are visible. These bands are formed by the apposition of
A. Protein particles
B. Chromomeres on chromonemata
C. Nucleosomes
D. None of these
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Correct Answer - B
(b) Polytene chromosomes contain several dark stained regions called bands separated by lighter or less stained area called interbands . These dark bands are heterchromatin (genetically inert) area .
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