Hypernyms (to doodle is one way to...): draw (represent by making a drawing of, as with a pencil, chalk, etc. on a surface). Doodle entails doing...: delineate; describe; draw; line; trace (make a mark or lines on a surface).
DNA polymerases can only extend a DNA strand in a 5â² to 3â² direction, different mechanisms are used to copy the antiparallel strands of the double helix. In this way, the base on the old strand dictates which base appears on the new strand.
This is what I understand: DNA Polymerase can only synthesize a complementary strand in the 5' to 3' direction, yet it is described to work in the 3' to 5' direction on the template, which doesn't make sense to me.