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Assertion (A) : Base ratio in DNA is always constant.

Reason (R) : On DNA, there is complementary base pairing between purines on one strand with pyrimidines on the other strand.

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Important Questions on Gene: Its Nature, Expression and Regulation

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MHT-CET TRIUMPH Biology Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Gene: Its Nature, Expression and Regulation>Critical Thinking>Q 9
A segment of DNA molecule contains 200 guanine and 200 thymine bases. What will be the total number of nucleotides in this segment of DNA?
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MHT-CET TRIUMPH Biology Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Gene: Its Nature, Expression and Regulation>Critical Thinking>Q 10
The number of hydrogen bonds in the DNA molecule of 150 base pairs having 60 AT pairs would be
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MHT-CET TRIUMPH Biology Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Gene: Its Nature, Expression and Regulation>Critical Thinking>Q 11
In DNA, if 10% guanine is present, what will be the % of thymine?
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MHT-CET TRIUMPH Biology Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Gene: Its Nature, Expression and Regulation>Critical Thinking>Q 13
If DNA strand has 10 spirals, the length of the DNA strand will be
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MHT-CET TRIUMPH Biology Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Gene: Its Nature, Expression and Regulation>Critical Thinking>Q 14
How many turns of double helix DNA will be there in a molecule of DNA having 45 base pairs?
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MHT-CET TRIUMPH Biology Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Gene: Its Nature, Expression and Regulation>Critical Thinking>Q 15
A 340 Ao long DNA molecule consists of
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MHT-CET TRIUMPH Biology Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Gene: Its Nature, Expression and Regulation>Critical Thinking>Q 16

Given figure represents the DNA double helix model as proposed by Watson and Crick. Select the option that shows correct measurement of 1,2 and 3.

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MHT-CET TRIUMPH Biology Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Gene: Its Nature, Expression and Regulation>Critical Thinking>Q 17
Function of helix-destabilizing proteins is to