Question

From the given options, identify the palindromic sequence containing 5’ GTT sequence.

• A. 5^’ GTTAAC 3^’
  3^’ CAATTG 5^’
• B. 5^’ GTTCCA 3^’
  3^’CAAGGT 5^’
• C. 5^’ GAATTC 3^’
  3^’ CTTAAG 5^’
• D. 5^’ CAGTAA 3^’
  3^’ GTCATT 5^’

Answer 1

The correct option is A 5^’ GTTAAC 3^’

3^’ CAATTG 5^’

A palindrome is the term for a sequence of characters that reads the same backwards or forwards. A palindromic sequence in case of a DNA strand reads same on two strands when orientation is kept same. The sequence where the first three bases is 5^’GTT and palindromic is 5^’GTTAAC 3^’ as both the strands reads the same in both orientations, i.e., from the 5’ to 3’ end and the 3’ to 5’ end (3^’ CAATTG 5^’).