Question
Question 10 of 25 Below is the base sequence for one strand in a short segment of DNA. GCATAG Which sequence of bases would the complemen tary segment of mRNA have? A. GCUAUG B. GCT ATC C. TAG GCA D. CGUAUC
Answer
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Joel
Professional · Tutor for 6 years
Answer
D. CGUAUC
Explanation
## Step 1: Understand the principle of DNA to RNA transcriptionIn the process of DNA to RNA transcription, the base pairs of DNA are transcribed to form complementary base pairs in RNA. The rules of transcription are as follows:- Adenine (A) in DNA pairs with Uracil (U) in RNA- Cytosine (C) in DNA pairs with Guanine (G) in RNA- Guanine (G) in DNA pairs with Cytosine (C) in RNA- Thymine (T) in DNA pairs with Adenine (A) in RNA## Step 2: Apply the transcription rules to the given DNA sequenceThe given DNA sequence is GCATAG. Applying the transcription rules, we get:- G in DNA pairs with C in RNA- C in DNA pairs with G in RNA- A in DNA pairs with U in RNA- T in DNA pairs with A in RNA- A in DNA pairs with U in RNA- G in DNA pairs with C in RNA### The complementary sequence in mRNA would therefore be CGUAUC.