Apply concepts How did you know which bases to use when you transcribed the DNA sequence to mRNA codons?

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