MRNA AND TRANSCRIPTION Transcription
Fill in the blanks below. On the illustration of transcription, label the DNA, the newly forming
mRNA, the completed strand of mRNA and a free nucleotide,
from the
Messenger RNA (mRNA) carries the instructions to make a particular
DNA in the
to the ribosomes. The process of producing mRNA from
instructions in the DNA is called
During transcription, the DNA molecule unwinds and separates, exposing the nitrogenous bases.
Free RNA
pair with the exposed bases. There is no
(T) in
RNA
(U) pairs with adenine (A) instead. RNA contains the sugar
instead of deoxyribose. The mRNA molecule is completed by the formation of
between the RNA
and it then separates from DNA. The
mRNA molecule is a
strand, unlike DNA.