In the given segment DNA strand the base sequence on the opposite strands are same when read in opposite directions . Such sequences are known as of basis pairs.
5'.....GAATTCC……....3'
3'.....CTTAAC ……..5'

Options

A. Replication sequence
B. Deletion mutation
C. Origin of replication .
D. Palindromic sequence

Answer

To solve the question, we need to analyze the given DNA strands and determine the type of sequence they represent.

### Step-by-Step Solution:

1. **Identify the DNA Strands**:
- The first strand is given as: 5'.....GAATTCC……....3'
- The second strand is given as: 3'.....CTTAAC ……..5'

2. **Read the Sequences in Opposite Directions**:
- The first strand (5' to 3') reads: GAATTCC
- The second strand (3' to 5') reads: CTTAAC
- However, if we read the second strand in the 5' to 3' direction, we reverse it: 5'...CAATTC...3'

3. **Check for Palindromic Nature**:
- A palindromic sequence is one that reads the same in both directions.
- When we compare the sequences:
- First strand (5' to 3'): GAATTCC
- Reverse of the second strand (5' to 3'): GAATTCC
- Both sequences are identical when read in the same direction.

4. **Conclusion**:
- Since both strands read the same in the 5' to 3' direction, they represent a palindromic sequence.
- Therefore, the answer to the question is **D. Palindromic sequence**.