| Assertion : In both DNA and RNA, heterocyclic base and phosphate ester linkages are at C-1' and C-5' respectively of the sugar molecule. |
| Reason : Nucleotides and nucleosides mainly differ from each other in presence of phosphate units. |
A) Assertion and reason both are correct statements and reason is correct explanation for assertion.
B) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C) Assertion is correct statement but reason is wrong statement.
D) Assertion is wrong statement but reason is correct statement.
Correct Answer: B
Solution :
Nucleosides contain only sugar and a base whereas nucleotides contain sugar, base and a phosphate group as well.
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