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Giant polytene chromosomes are found in ___________(a) Egg of fruit fly(b) Salivary gland of larvae of fruit fly(c) Salivary gland of adult fruit fly(d) All of the mentionedI had been asked this question in semester exam.Origin of the question is Genes, Chromosomes and Genomes in division Bioenergetics, Enzymes, Metabolism, Genes, Chromosomes and Genomes of Cell Biology

Answer»

Right choice is (b) SALIVARY gland of larvae of fruit fly

The explanation: Polytene chromosomes are a type of giant chromosomes which are many TIMES longer in length than NORMAL chromosomes. Polytene chromosomes are found in the salivary gland of a larval fruit fly and show SEVERAL DISTINCT darkly stained bands.



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