Chargaff's Rule
Trending Questions
Q. State whether true or false:
The ratio A+T/G+C remains constant for a particular species.
The ratio A+T/G+C remains constant for a particular species.
- True
- False
Q. Which of the following is NOT true with regard to Chargaff’s rules?
- A+T : G+C = 1:1
- A:T = 1:1
- G:C =1:1
- A+G : T+C = 1:1
Q. In a DNA, the percentage of thymine is 20 %, then what is the percentage of guanine?
- 20%
- 30%
- 60%
- 40%
Q. In DNA of certain organisms, guanine constitutes 20% of the bases. What percentage of the bases would be adenine?
- 10%
- 30%
- 40%
- 20%
Q. The following ratio is generally constant for a given species:
- A+G/T+C
- G+C/A+T
- A+C/T+G
- None of the above
Q. In sea urchin DNA, which is double stranded, 17% of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in this DNA are:
- G - 34 %, A - 24.5 %, T - 24.5 %
- G - 17 %, A - 33 %, T - 33 %
- G - 17 %, A - 16.5 %, T - 32.5 %
- G - 8.5 %, A - 50 %, T - 24.5 %
Q. Which is not correct according to Chargaff's rule?
- A+GC+T=1
- A+T=C+G
- A+G=C+T
- Purines=Pyrimidines
Q. Which one of the following is not applicable to RNA?
- Complementary base pairing
- 5' phosphoryl and 3' hydroxyl ends
- Chargaff's rule
- Heterocyclic nitrogenous bases
Q.
If a DNA sample contain 23.8% cytosine resedues, then amount of thymine present in the same DNA sample is
23.8%
50%
26.2%
25%
Q. The complementary DNA strand for ATGGCTTGCAATGCT is
- TACCGAACGTTACGC
- TACCGAACGATACGA
- TACCGAACGTTACGA
- TACCGACCGTTACGA