Chargaff rule states that in DNA there is always equality in quantity between the bases A and T and between the bases G and C. Related Theory In all the species the molar ratios [A]=[T] and [C]=[G], and that ratio [C+G]/[A+T] was typically less than the unity with [C+G] is less abundant.
Chargaff's rule states that in an organism
NEET UG 2003 — Chemistry Organic Chemistry
2003mcqeasy
Chargaff's rule states that in an organism
Official previous-year question
Held on 30 Apr 2003 · Verified 9 Jul 2026.
Options
- A
amount of adenine (A) is equal to that of thymine (T) and the amount of guanine (G) is equal to that of cytosine (C)
- B
amount of adenine (A) is equal to that of guanine (G) and the amount of thymine (T) is equal to that of cytosine (C)
- C
amount of adenine (A) is equal to that of cytosine (C) and the amount of thymine (T) is equal to that of guanine (G)
- D
amounts of all bases are equal
Did you get this right?
Sign in to track your attempts and accuracy.
Your note
Sign in to keep a private note on this question. Nothing you write is ever public.
NEET UG Organic Chemistry in other years
More NEET UG Organic Chemistry questions
Which of the following is a reducing sugar?
2026easy
Markovnikov's rule is applicable to:
2026easy
Name the class of enzyme that usually catalyze the following reaction : $\mathrm{S}-\mathrm{G}+\mathrm{S}^{\#} \rightarrow \mathrm{~S}+\mathrm{S}^{\#}-\mathrm{G}$ Where, $G \rightarrow$ a group other than hydrogen $S \rightarrow$ a substrate $\mathrm{S}^{\#} \rightarrow$ another substrate
2025medium
Identify the suitable reagent for the following conversion 
2025medium
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : undergoes $\mathrm{S}_{\mathrm{N}} 2$ reaction faster than Reason (R) : Iodine is a better leaving group because of its large size. In the light of the above statements, choose the correct answer from the options given below :
2025easy
Other Chemistry topics for NEET UG
Keep practicing Organic Chemistry
Work through every NEET UG Organic Chemistry PYQ, year by year.