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Principles of Inheritance and Variation

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Advanced Botany

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  1. The polytene chromosomes were discovered for the first time in
    1. Drosophila
    2. Chironomus
    3. Musca nebulo
    4. Musca domestica
Correct Option: B

Polytene chromosomes are also called giant chromosomes. They consist of numerous parallel identical chromatids due to repeated duplication without division. They were first time observed by Balbiani in the salivary glands of Chironomus.


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