The DNA segment from which the primary mRNA transcript is copied or transcribed is called:-
DNA segment from which the primary mRNA transcript is copied or transcribed is called as Template strand Template strand : Strand which is being acted upon by RNA polymerase. mRNA produced resembles the sequence of the opposite strand (except U in place of T). The opposite strand is known as coding, sense or plus strand.
Coding strand
Initiator methionine domain
Template strand
Translation unit
Transcription