Which of the following is not a correct state | vedclass

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(C) The correct answer is $C$. In the process of translation,termination is mediated by release factors (proteins) that recognize stop codons $(UAA, U

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For termination of translation,there is a specific $tRNA$ that is referred to as terminator $tRNA$.

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(C) The correct answer is $C$. In the process of translation,termination is mediated by release factors (proteins) that recognize stop codons $(UAA, UAG, UGA)$. There is no specific $tRNA$ that acts as a 'terminator $tRNA$' to stop the translation process. Option $A$ is correct as nucleosomes are the repeating units of chromatin. Option $B$ is correct because $DNA$ lacks the $2'-OH$ group present in $RNA$,making it more stable. Option $D$ is correct because $PCR$ (Polymerase Chain Reaction) allows for the amplification of $DNA$ from a single cell,making it sufficient for $DNA$ fingerprinting.

Column $I$	Column $II$
$A$. Griffith	$i$. Lac operon
$B$. Jacob and Monod	$ii$. $DNA$ is the genetic material
$C$. Meselson and Stahl	$iii$. Transforming principle
$D$. Hershey and Chase	$iv$. $DNA$ replicates semiconservatively

Which of the following is not a correct statement?

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In which of the following is the flow of genetic information in the reverse direction?

Assertion : Histones are basic proteins of major importance in packaging of eukaryotic $DNA$. $DNA$ and histones comprise chromatin forming the bulk of eukaryotic chromosome.
Reason : Histones are of five major types $H_1, H_2A, H_2B, H_3$ and $H_4$.

The structural formula of the pentose sugar present in $DNA$ is given. Select the correct group for the position marked '$X$' from the options.

Mutations which alter nucleotide sequence within a gene are called

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