Question

Give below is a sample of a portion of $DNA$ strand giving the base sequence on the opposite strands. What is so special shown in it?
$5^{\prime }$_____GAATTC'_____$3^{\prime }$
$3^{\prime }$_____CTTAAG'_____$5^{\prime }$

• A. replication completed
• B. deletion mutation
• C. start codon at the $5^{\prime }$ end
• D. palindromic sequence of base pairs

Answer 1

The correct option is D palindromic sequence of base pairs

A palindromic sequence is a nucleic acid sequence on double-stranded DNA or RNA wherein reading 5' (five-prime) to 3' (three prime) forward on one strand matches the sequence reading 5' to 3' on the complementary strand with which it forms a double helix. This definition of palindrome thus depends on complementary strands being palindromic of each other.

So the correct option is 'Palindromic sequence of base pairs'.