Read the following four statements (1 to 4):1 | vedclass

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(C) Let us analyze each statement:$1$. In transcription,$DNA$ is transcribed into $RNA$. Adenine $(A)$ in $DNA$ pairs with Uracil $(U)$ in $RNA$. This

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(C) Let us analyze each statement:$1$. In transcription,$DNA$ is transcribed into $RNA$. Adenine $(A)$ in $DNA$ pairs with Uracil $(U)$ in $RNA$. This statement is correct.$2$. Regulation of $lac$ operon by a repressor is called negative regulation,not positive regulation. Positive regulation involves activators like $CAP$. This statement is incorrect.$3$. The human genome is estimated to contain approximately $20,000$ to $25,000$ genes,not $50,000$. This statement is incorrect.$4$. Haemophilia is a well-known sex-linked recessive disorder caused by a defect in blood clotting factors. This statement is correct.Thus,statements $1$ and $4$ are correct. The total number of correct statements is $2$.

Column $I$	Column $II$
$1$. Ligase	$a$. Peptide bond formation
$2$. Ribozyme	$b$. Hydrolysis of lactose
$3$. Permease	$c$. Joining of Okazaki fragments
$4$. $\beta$-galactosidase	$d$. Increases permeability

Column $X$	Column $Y$
$(1)$ $DNA$	$(P)$ Most abundant
$(2)$ $m-RNA$	$(Q)$ Various types based on anticodons
$(3)$ $t-RNA$	$(R)$ Carries information as genetic code
$(4)$ $r-RNA$	$(S)$ $A$ specific part acts as a template

Similar Questions

$A$ genetic mutation that does not result in a phenotypic expression is called a .....

$DNA$ generally acts as a template for the synthesis of:

Select the correct match for $X$ and $Y$:
Column $X$ Column $Y$
$(1)$ $DNA$ $(P)$ Most abundant
$(2)$ $m-RNA$ $(Q)$ Various types based on anticodons
$(3)$ $t-RNA$ $(R)$ Carries information as genetic code
$(4)$ $r-RNA$ $(S)$ $A$ specific part acts as a template

Which one of the following correctly represents the manner of replication of $DNA$?

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