Why does synthesis of DNA proceed only in the 5′ to 3′ direction?ADNA polymerases can only add nucleotides to the 3′ end of a polynucleotide strand.BThe 3′ end of the polynucleotide molecule is more electronegative than the 5′ end.CThis is the direction in which the two strands of DNA unzip.DThe chromosomes are always aligned in the 5′ to 3′ direction in the nucleus.
Shamit Jain , 4 Years ago
Grade 10
