Today in biotechnology large number of research is going on and most of
them basically related with improving any variety of plant or animal by
inserting a foreign gene with economically important characteristics but
sometimes it can be improve by increase gene product or making product
storage to a particular body part or product . All such things can be
done only if we use a specific DNA sequence called promoter. In simple
words promoter is as important as clutch during starting a bike along
with kick. Promoter can be located near or within the coding region and
help in initiating transcription, determining the level and place of
gene where it is going to express. This book provide a vast knowledge of
promoter under simple and short topics specially related to promoter
role in transcription, promoter types and regulation of promoter by
various factors along with evolutionary importance of promoter.