Why does a DNA strand grow only in the 5' to 3' direction?

T

tg0001

New member
because mRNA can only read a DNA molecule in the 5' to 3' direction
because the DNA molecule only unwinds in the 5' to 3' direction
because DNA polymerases can only add nucleotides to the 5' end of the growing molecule
because DNA polymerases can only add nucleotides to the 3' end of the growing molecule
 
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