SATHEE: Molecular Basis of Inheritance Question 9

Molecular Basis of Inheritance Question 9

9. 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 :

(a) G $17$ , T $32.5$

(b) G $17$ , T $33$

(d) G $34$ , A $24.5$ , T $24.5$

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Answer : b

Hints & Solution

(b) Chargaff’s rule states that $A = T$ and $G$ $\equiv C$ . The molar amount of adenine $=$ molar amount of thymine. The molar amount of guanine $=$ molar amount of cytosine. Hence, $G$ is $17$ so, $C = 17$ $A = 33$

Molecular Basis of Inheritance Question 9

9. 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 :

Answer : b

Hints & Solution

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

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Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Molecular Basis of Inheritance Question 9

9. 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 :

Answer : b

Hints & Solution

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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9. 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 :