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TGC ATC CGA AGT CGA
GGG-GCT-TAT
In transcription, the mRNA strand is formed by complementary base pairing of the template DNA strand. However we should note that the nitrogenous bases in mRNA are Adenine, Guanine, Cytosine and Uracil, while those in DNA are Adenine, Guanine, Cytosine and Thymine.So the mRNA strand would be formed by matching the A in DNA with U in mRNA, T in DNA with A in mRNA, C in DNA with G in mRNA and G in DNA with C in mRNA.I hope that helps!
CGA
Aca tag gct aat gct aat cgt gca cga tct gaa cgatgt atc cga tta cga tta gca cgt gct aga ctt gct
GCT AAG would produce the strand of mRNA of "CGA UUC" CGU AAU UGA CUG
AGTCG (I'm assuming your strand was written in the normal 5' to 3' order, and I wrote mine in that order as well, which means the last residue in my strand pairs with the first residue in your strand, and vice versa).
The complementary strand of the DNA is TAA-GCT-ACG
Ucg cga GAC UAU
the DNA strand GTT ACC would be transcribed to CAA UGG.
TGC ATC CGA AGT CGA
The sequence of nucleotides of the complementary strand will be the nucleotides which bind to the nucleotides of the template. In DNA, adenine binds to thymine and cytosine binds to guanine. The complementary strand will therefore have an adenine where the template strand has a thymine, a guanine where the template has a cytosine, etc. For example: If the template strand is ATG-GGC-CTA-GCT Then the complementary strand would be TAC-CCG-GAT-CGA
Gcu aga
Gct tag tcg
GGG-GCT-TAT
GCT GA :)
for CGA UUC=GCT AAG