Correct Answer is : there are two strands which run antiparallel one in 5′→3′ direction and other in 3′→5′

the proportion of adenine in relation to thymine varies with the organism

there are two strands which run antiparallel one in 5^{'} \to 3^{'} direction and other in 3^{'} \to 5^{'}

the total amount of purine nucleotides and pyrimidine nucleotides is not always equal

there are two strands which run parallel in the 5^{'} \to 3^{'} direction

AIPMT 2008 Biology Solved Paper

Question : 25 of 100

Marks: +1, -0

In the DNA molecule:

the proportion of adenine in relation to thymine varies with the organism
there are two strands which run antiparallel one in 5′→3′ direction and other in 3′→5′
the total amount of purine nucleotides and pyrimidine nucleotides is not always equal
there are two strands which run parallel in the 5′→3′ direction

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