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Chromosomal responses to heat and heavy metal shocks were studied in the pupal trichogen polytene chromosomes of Lucilia cuprina. Heat shock induced seven distinct puffs on different chromosomes at the following loci: 1C2, 21A1, 21C, 23B, 24B, 42A and 95B3. Arsenate and mercury, two of the most common toxic environmental chemical pollutants also, induced almost the same set of puffs except 20B2, which...
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