(D) In the structure of $DNA$,nitrogenous bases follow Chargaff's rule of base pairing.According to this rule,Adenine $(A)$ always pairs with Thymine

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(D) In the structure of $DNA$,nitrogenous bases follow Chargaff's rule of base pairing.According to this rule,Adenine $(A)$ always pairs with Thymine $(T)$ via two hydrogen bonds,and Guanine $(G)$ always pairs with Cytosine $(C)$ via three hydrogen bonds.Therefore,both $A-T$ and $G-C$ are correct complementary base pairings found in $DNA$.

Class 12 Biology Molecular Basis of Inheritance The DNA

Easy

Which complementary base pairing is present in the structure of $DNA$?

A
$A-T$
B
$G-C$
C
$A-C$
D
Both $(A)$ and $(B)$

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Class 12

Biology Questions

Chapter

Molecular Basis of Inheritance

Subtopic

The DNA

Match List-$I$ with List-$II$:

List-$I$ List-$II$

$a$. Bacteriophage $\phi \times 174$ $i$. $48502$ base pairs

$b$. Bacteriophage lambda $ii$. $5386$ nucleotides

$c$. Escherichia coli $iii$. $3.3 \times 10^9$ base pairs

$d$. Haploid content of human $DNA$ $iv$. $4.6 \times 10^6$ base pairs

Choose the correct answer from the options given below:

List-$I$	List-$II$
$a$. Bacteriophage $\phi \times 174$	$i$. $48502$ base pairs
$b$. Bacteriophage lambda	$ii$. $5386$ nucleotides
$c$. Escherichia coli	$iii$. $3.3 \times 10^9$ base pairs
$d$. Haploid content of human $DNA$	$iv$. $4.6 \times 10^6$ base pairs