$DNA$ polymerases catalyse polymerisation of / in

Escherichia coli is an important material for genetic experiments because

Sometimes cattle or even human beings give birth to their young ones that are having extremely different sets of organs like limbs/position of eye(s) etc. Comment.

Consider the process that a cell uses to replicate its double strand $DNA$ to make copies for daughter cells. Which statement describes the $DNA$ in daughter cells?

Transcription means synthesis of