MCQ
In $DNA$, the complementary bases are
- AUracil and adenine; cytosine and guanine
- ✓Adenine and thymine; guanine and cytosine
- CAdenine and thymine; guanine and uracil
- DAdenine and guanine; thymine and cytosine
✓
Answer
Correct option: B.
Adenine and thymine; guanine and cytosine
b
(b) $\mathop {{\rm{Adenine}} = {\rm{Thymine}}}\limits_{{\rm{2 hydrogen bonds}}} {\rm{,}}\,\mathop {{\rm{Guanine}} \equiv {\rm{Cytosine}}}\limits_{{\rm{3 hydrogen bonds}}} $
(b) $\mathop {{\rm{Adenine}} = {\rm{Thymine}}}\limits_{{\rm{2 hydrogen bonds}}} {\rm{,}}\,\mathop {{\rm{Guanine}} \equiv {\rm{Cytosine}}}\limits_{{\rm{3 hydrogen bonds}}} $
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Ratio of time taken to complete $60\%$ and $20\%$ of first order reaction $[A \rightarrow $ product $]$ is : $(\log\,2 = 0.3)$
→.
Red phosphorus is less reactive than yellow phosphorus because
Al4C3 on hydrolysis yields:
The $EAN$ of metal atoms in $Fe(NO)_2(CO)_2$ and $CO_2(CO)_8$ respectively are
→Which of the following is most reactive towards nucleophilic substitution reaction ?
Which among the following represent reagent $'A'$?
→Which one of the following ionic species will impart colour to an aqueous solution?
Identify $X$ and $Y$ in the following sequence
→${C_2}{H_5}Br\xrightarrow{X}{\text{product}}\xrightarrow{{\text{Y}}}{C_3}{H_7}N{H_2}$
The reduction potential of hydrogen half cell will be positive if