Which of the following features of DNA makes in uniquely suited to store and transmit genetic information from generation to generation?
- AComplementarity of the two standsCorrect
- BDouble helix
- CNumber of base pairs per turn
- DSugar phosphate backbone
Explanation
The correct answer is A because the complementarity of the two strands is the fundamental mechanism that allows DNA to replicate accurately. According to base pairing rules, Adenine always pairs with Thymine and Cytosine always pairs with Guanine. During cell division, the two strands unzip, and each original strand acts as a template to build a new, identical partner strand. This ensures that the genetic code is copied precisely and passed from one generation to the next. While the double helix shape and the backbone provide structural stability, it is the specific pairing of bases that allows for the storage and transmission of biological information.
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