The polytene chromosomes were first discovered in

Chironomus

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Fruitfly

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Drosophila

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House fly

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Solution

The correct option is A Chironomus
Polytene chromosomes were first discovered by Balbiani in Chironomus and its hereditary nature was observed in Drosophila. Polytene chromosomes are formed by repetitive DNA replication without any cell division.
So, the correct answer is"Chironomus".

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