Understanding Transcription
Transcription is the process of copying a DNA sequence into an mRNA sequence. This follows the base pairing rules:
* Adenine (A) in DNA pairs with Uracil (U) in RNA.
* Thymine (T) in DNA pairs with Adenine (A) in RNA.
* Guanine (G) in DNA pairs with Cytosine (C) in RNA.
* Cytosine (C) in DNA pairs with Guanine (G) in RNA.
Applying the Rules
1. Separate the DNA strands: The DNA sequence is double-stranded. We need to work with one strand.
2. Determine the template strand: We need to know which DNA strand serves as the template for mRNA synthesis. Since the question doesn't specify, we'll assume the given sequence is the template strand.
3. Complementary base pairing: Replace each base in the DNA sequence with its complementary base in RNA:
* T becomes A
* C becomes G
* G becomes C
* A becomes U
The Result
Using the given DNA template sequence: TCG GAC CAT CGA
The mRNA sequence would be: AGC CUG GUA GCU
