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Question

Chargaffs rule states that in a organism

A
Amount of adenine ( A ) is equal to that of guanine ( G) and the amount of thymine ( T ) is equal to that of cytosine ( C )
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B
Amount of adenine ( A ) is equal to that of cytosine ( C ) and the amount of thymine ( T) is equal to that of guanine ( G)
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C
Amount of all bases are equal
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D
Amount of adenine ( A ) is equal to that of thymine ( T) and the amount of guanine ( G) is equal to that of cytosine
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Solution

The correct option is D Amount of adenine ( A ) is equal to that of thymine ( T) and the amount of guanine ( G) is equal to that of cytosine
According to Chargaff's rule,
Percentage of adenine = percentage of thymine and percentage of guanine = percentage of cytosine.
This is just an out come of the face that :
Adenine and thymine are complementary and guanine and cytosine are complementary.

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