Balbiani rings are sites of

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(b) : In certain development stages the polytene chromosomes bear conspicuous swellings called chromosome puffs. The larger swellings are called Balbi

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$RNA$ and protein synthesis

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(b) : In certain development stages the polytene chromosomes bear conspicuous swellings called chromosome puffs. The larger swellings are called Balbiani rings. In the region of a puff or Balbiani ring, the $DNA$ strands uncoil, become active and produce number of copies of $mRNA$. The $mRNAs$ may remain temporarily stored in the puff and they may undergo transcription to form proteins. Thus, Balbiani rings are the sites of $RNA$ and protein synthesis.

List $I$	List $II$
$A$. Gene $a$	$I.\; \beta$-galactosidase
$B$. Gene $y$	$II$. Transacetylase
$C$. Gene $i$	$III$. Permease
$D$. Gene $z$	$IV$. Repressor protein

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Match List $I$ with List $II$.

List $I$ List $II$

$A$. Gene $a$ $I.\; \beta$-galactosidase

$B$. Gene $y$ $II$. Transacetylase

$C$. Gene $i$ $III$. Permease

$D$. Gene $z$ $IV$. Repressor protein

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