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Explain palindromic sequence in DNA

BiologyClass 12CBSEAnswered 1 Jun 2026
Answer

A palindromic sequence is a DNA sequence that reads the same in the 5′ to 3′ direction on both complementary strands.

Palindromic Sequence:

  • 5′ to 3′ strand – top DNA strand direction
  • 3′ to 5′ strand – bottom DNA strand direction
  • GAATTC – palindromic DNA sequence
  • CTTAAG – complementary sequence
  • Arrows – show opposite reading directions of DNA strands

Biology · Class 12