What does a DNA molecule look like?
1 Answer
Aug 29, 2016
A molecule of DNA looks like a spiral staircase. The steps of the stair represents paired bases attached by hydrogen bonds.
Explanation:
Biologists describe DNA as a double helical molecule , because:
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there are two chains of nucleotides running side by side (but in opposite directions, hence antiparallel and double stranded) due to presence of hydrogen bonds between them
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the double stranded molecule could have resembled a ladder, but it becomes twisted: so the molecule looks like a spiral ladder (hence described as helical)
