Why is the new dna strand complementary to the 3' to 5' strands assembled in short segments? why is the new dna strand complementary to the 3' to 5' strands assembled in short segments? only short dna sequences can extend off the rna primers the replication forks block the formation of longer strands dna polymerase can assemble dna only in the 5' to 3' direction dna polymerase can assemble dna only in the 3' to 5' direction it is more efficient than assembling complete new strands?