The nucleotide sequence for one strand of DNA starts with GGA AGA and so on. Predict the nucleotide sequence of the other strand.

Options

A. TTC TCT
B. CTC TCT
C. CCT TGT
D. CCT TCT

Answer

To predict the nucleotide sequence of the other strand of DNA given the sequence of one strand, we need to apply the rules of complementary base pairing. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Identify the Given Sequence**:
The nucleotide sequence of one strand of DNA starts with GGA AGA.

2. **Understand Complementary Base Pairing**:
In DNA, the bases pair as follows:
- Adenine (A) pairs with Thymine (T)
- Guanine (G) pairs with Cytosine (C)

3. **Write Down the Given Sequence**:
The sequence provided is:
- GGA AGA

4. **Determine the Complementary Bases**:
- For GGA:
- G pairs with C
- G pairs with C
- A pairs with T
- For AGA:
- A pairs with T
- G pairs with C
- A pairs with T

5. **Combine the Complementary Bases**:
- From GGA, we get CCT
- From AGA, we get TCT
- Therefore, the complete complementary strand is CCT TCT.

6. **Final Sequence**:
The nucleotide sequence of the other strand is CCT TCT.

7. **Check Against Options**:
If we have options such as:
- TTC, TCT, CTC
- TCT, CCT
- TGT
- CCT and TCT
The correct option that matches our result is CCT and TCT.