The two strands of the DNA structure are: | vedclass

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(B) The $DNA$ double helix model,proposed by $Watson$ and $Crick$,consists of two polynucleotide strands.These strands run in opposite directions,mean

Vedclass · Accepted Answer

Antiparallel and complementary

Vedclass · Answer

(B) The $DNA$ double helix model,proposed by $Watson$ and $Crick$,consists of two polynucleotide strands.These strands run in opposite directions,meaning one strand runs in the $5' \rightarrow 3'$ direction while the other runs in the $3' \rightarrow 5'$ direction; this orientation is known as antiparallel.Furthermore,the nitrogenous bases on the two strands are complementary,where $Adenine$ $(A)$ always pairs with $Thymine$ $(T)$ via two hydrogen bonds,and $Guanine$ $(G)$ always pairs with $Cytosine$ $(C)$ via three hydrogen bonds.Therefore,the strands are antiparallel and complementary.

The two strands of the $DNA$ structure are:

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