NEET
- Exam
- NEET
- Subject
- Zoology
- Chapter
- Biotechnology - Principles and Processes
NEET · Zoology · Biotechnology - Principles and Processes
What is a palindrome in DNA?
What is a palindrome in DNA?
Options
- AA sequence of base pairs that reads in the same direction on both strands
- BA sequence of base pairs that reads in opposite direction on both strands
- CA sequence of base pairs that reads same on the two strands when orientation of reading is kept the same
- DA sequence of base pairs that reads different on the two strands when orientation of reading is kept the same
Correct answer
C. A sequence of base pairs that reads same on the two strands when orientation of reading is kept the same
Step-by-step solution
> Each restriction endonuclease recognizes a specific palindromic nucleotide sequences in the DNA. As against a word-palindrome where the same word is read in both directions, the palindrome in DNA is a sequence of base pairs that reads same on the two strands when orientation of reading is kept the same. For example, the following sequences reads the same on the two strands in 5' to 3' direction. This is also true if read in the 3' to 5' direction. >5' —— GAATTC —— 3' >3' —— CTTAAG —— 5'