Question

What is special of base sequence of two strands of DNA segment 5’- GAATTC -3’ 3’- CTTAAG -5’

• A. Deletion mutation
• B. Start condition at 5’ end
• C. Replication completed
• D. Palindromic sequence of base

Answer 1

The correct option is D Palindromic sequence of base

The given sequence 5’- GAATTC -3’/ 3’- CTTAAG -5’ reads the same in the 5’$\to$ 3’ polarity on both the strands of DNA. Such sequences are called palindromic sequences.

In molecular biology, palindromic sequences are referred to as the sequence of nucleotides in the DNA or RNA duplex, where the sequence in one strand is the same as the complementary sequence of the other strand when read from the same direction on both the strands, either 5’ to 3’ or 3’ to 5’.