The base sequence of the gene coding for a short polypeptide is CTACGCTAGGCATTAGACTGGTA. What would be the base sequence of the mRNA transcribed from this gene?
To determine the base sequence of the mRNA transcribed from a given DNA sequence, you need to apply the following rules:
1. The DNA sequence contains the bases adenine (A), cytosine (C), guanine (G), and thymine (T).
2. In RNA, thymine (T) is replaced by uracil (U).
3. The mRNA sequence is complementary to the DNA sequence, meaning adenine pairs with uracil, cytosine pairs with guanine, and guanine pairs with cytosine.
Given the DNA sequence: CTACGCTAGGCATTAGACTGGTA
To find the mRNA sequence:
1. Replace thymine (T) with uracil (U):
CTACGCTAGGCATTAGACTGGTA -> CUAUGCUAGGCAUUAGACUGGUA
Hence, the base sequence of the mRNA transcribed from this gene is CUAUGCUAGGCAUUAGACUGGUA.