Chromosomes present in the prolonged prophase in the salivary glands of Drosophila are:

Polytene chromosome

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B-Chromosomes

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Lampbrush chromosome

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Supernumerary chromosomes

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Solution

The correct option is A Polytene chromosome
Chromosomes found during the interphase or prolonged prophase stage of cell division in the nuclei of the salivary gland cells of Drosophila are polytene chromosomes. They are called polytene chromosomes because they have many longitudinal strands called chromonemata.

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