What is the complementary strand of mRNA?
The upper strand of DNA is the “mRNA-like” strand. The lower strand is the strand that is complementary to the mRNA.
How do you find the complementary strand of mRNA?
Complementary bases are: adenine (A) and thymine (T), and cytosine (C) and guanine (G). So if one strand of DNA reads A-C-G-C-T-A, then the complementary strand is T-G-C-G-A-T. You can find the sequence of the mRNA transcript in the same way, by using the complements of the bases shown in the DNA sequence.
How is the complementary strand made?
If the two strands of a DNA molecule are separated, each can be used as a pattern or template to produce a complementary strand. The enzyme DNA polymerase then moves along the exposed DNA strand, joining newly arrived nucleotides into a new DNA strand that is complementary to the template.
What is the complementary mRNA code?
mRNA → DNA For converting a sequence from mRNA to the original DNA code, apply the rules of complementary base pairing: Cytosine (C) is replaced with Guanine (G) – and vice versa. Uracil (U) is replaced by Adenine (A) Adenine (A) is replaced by Thymine (T)
How do you write a complementary RNA sequence?
A complementary strand of DNA or RNA may be constructed based on nucleobase complementarity….DNA and RNA base pair complementarity.
| Nucleic Acid | Nucleobases | Base complement |
|---|---|---|
| DNA | adenine(A), thymine(T), guanine(G), cytosine(C) | A = T, G ≡ C |
| RNA | adenine(A), uracil(U), guanine(G), cytosine(C) | A = U, G ≡ C |
How is the mRNA Strand made from the DNA template quizlet?
– mRNA is synthesised on the transcribing DNA strand. The enzyme RNA polymerase first binds to a promoter sequence on the transcribing strand, initiating transcription. The enzyme then moves along the transcribing strand, adding RNA nucleotides to the growing mRNA strand.