Polytene or giant chromosomes are found in

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(D) Polytene chromosomes are large,multi-stranded chromosomes formed through the process of endoreduplication,where $DNA$ replicates multiple times wi

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Salivary glands of Drosophila

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(D) Polytene chromosomes are large,multi-stranded chromosomes formed through the process of endoreduplication,where $DNA$ replicates multiple times without cell division.These chromosomes are commonly observed in the salivary glands of dipteran insects,such as $Drosophila$ (fruit fly).They consist of many parallel chromatids,often reaching $1000$ to $16000$ chromonemata,which makes them visible under a light microscope.

Chromosomes	Position of centromere
$A$. Metacentric	$1$. At the tip
$B$. Submetacentric	$2$. Almost near the tip
$C$. Acrocentric	$3$. At the middle
$D$. Telocentric	$4$. Slightly away from the middle

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Chromosomes Position of centromere

$A$. Metacentric $1$. At the tip

$B$. Submetacentric $2$. Almost near the tip

$C$. Acrocentric $3$. At the middle

$D$. Telocentric $4$. Slightly away from the middle

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