1.

Which of the following statements regarding a double - helical molecule of DNA is true ?A. Each strand is identicalB. Each strand replicates itselfC. Bases are perpendicular to the axisD. All hydroxyl groups of pentose are involved in linkages.

Answer» Correct Answer - C
In the double helical model of DNA proposed by Watson and Crick, the nitrogenous bases attached to the pentose sugar backbone are perpendicular to the axis and parallel to each other.


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