Question

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%, $$A$$ 16.5%, $$T$$ 32.5%
B. $$G$$ 17%, $$A$$ 33%, $$T$$ 33%  
C. $$G$$ 8.5%, $$A$$ 50%, $$T$$ 24.5%
D. $$G$$ 34%, $$A$$ 24.5%, $$T$$ 24.5%
Answer :   $$G$$ 17%, $$A$$ 33%, $$T$$ 33%

Releted MCQ Question on
Botany >> Molecular Basis of Inheritance

Releted Question 1

If the distance between two consecutive base pairs is $$0.34\,nm$$   and the total number of base pairs of a DNA double helix in a typical mammalian cell is $$6.6 \times {10^9}\,bp,$$   then the length of the DNA is approximately

A. 2.5 meters
B. 2.2 meters
C. 2.7 meters
D. 2.0 meters
Releted Question 2

Which of the following statements is correct?

A. Adenine pairs with thymine through one $$H$$-bond
B. Adenine pairs with thymine through three $$H$$-bonds
C. Adenine does not pair with thymine
D. Adenine pairs with thymine through two $$H$$-bonds
Releted Question 3

Which scientist experimentally proved that DNA is the sole genetic material in bacteriophage?

A. Jacob and Monod
B. Beadle and Tautum
C. Messelson and Stahl
D. Hershey and Chase
Releted Question 4

The final proof for DNA as the genetic material came from the experiments of:

A. Hershey and Chase
B. Avery, Mcleod and McCarty
C. Hargobind Khorana
D. Griffith

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Molecular Basis of Inheritance


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