Polytene chromosomes were first observed by

Batanetzky - 1980

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Heitz and Bauer - 1935

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Balbiani - 1881

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Stevens and Wilson - 1905

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Solution

The correct option is C Balbiani - 1881
Polytene chromosomes are over-sized chromosomes which have developed from standard chromosomes and are commonly found in the salivary glands of Drosophila melanogaster. It was first observed by Balbiani in 1881.

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