Given below is a short sequence of DNA describing the base pairs on each strand of DNA. What is so special about it?
5’___ GAATTC ___ 3’
3’ ___ CTTAAG ___ 5’
A
Replication completed
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Deletion mutation
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Start codon at the 5’ end
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Palindromic sequence of base pairs
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct option is D Palindromic sequence of base pairs The palindromes in DNA are base pair sequences that are the same when read forward (left to right) or backward (right to left) from a central axis of symmetry. The given sequences read the same in the 5′→3′ direction and in the 3′→5′ direction. Palindromic sequences are the recognition sites of a special type of enzymes called restriction endonucleases that cleave the DNA strand at that specific portion.