Q.

Which of the following pairs is not correctly matched ?

A. Recombinant DNA - DNA forming by union of segments of DNA from diffrent Sources
B. Purines - Nitrogenous bases Cytosine , thymine and Uracil
C. ATP - The principal energy carrying compound inthe cell
D. r-RNA - RNA molecules found in ribosomes
Answer» B. Purines - Nitrogenous bases Cytosine , thymine and Uracil
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