A) all chromosomes
B) Lampbrush chromosome
C) dicot stems
D) polytene chromosomes
Correct Answer: D
Solution :
Polytene chromosomes are common in salivary glands of insects. These were discovered by E.G. Balbiani. In certain developmental stages the polytene chromosomes bear conspicuous swellings called chromosome puffs. The larger swellings are called Balbiani rings.
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