Question

What is polarity the defference to double stand dna?

Answer 1

Answer:

$\huge {\text {\underline {ANSWER}}}$

✔✔The two chains have anti-parallel polarity. It means, if one chain has the polarity 5' ---- 3', the other has 3'---5'.

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Answer 2

This observation by Francis Crick, based on Rosalind Franklin's work, was one of the crucial steps in working out the structure of DNA. Since each strand has a 3′OH end and a 5′PO4 end, the only way the molecule has no polarityis if the two strands are antiparallel.