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.
Leading strand and lagging strand. DNA polymerases synthesize new chains only in the 5â² â 3â² direction and therefore, because of the antiparallel nature of the DNA molecule, move in a 3â² â 5â² direction on the template strand.