THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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parallel
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anti-parallel
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perpendicular
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irregularly
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Detailed explanation-1: -The two DNA chains are antiparallel, i.e., they run parallel but in opposite directions. Each DNA molecule has two strands of nucleotides. Each strand has a sugar-phosphate backbone, but the orientation of the sugar molecule is opposite in the two strands.
Detailed explanation-2: -In DNA, the 5’ carbon is located at the top of the leading strand, and the 3’ carbon is located at the lower section of the lagging strand. The nucleic acid sequences are complementary and parallel, but they go in opposite directions, hence the antiparallel designation.
Detailed explanation-3: -The strands of a DNA double helix are said to be “antiparallel” because they have the same chemical structure, but are opposite in direction. The direction of a DNA strand is also known as “polarity".