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NEET 2012
Exam
NEET
Year
2012
Subject
Zoology
Chapter
Biotechnology - Principles and Processes

NEET 2012 · Zoology · Biotechnology - Principles and Processes

Which one of the following represents a palindromic sequence in DNA?

Which one of the following represents a palindromic sequence in DNA?

Options

  1. A5'-GAATTC-3' 3'-CTTAAG-5'
  2. B5'CCAATG-3' 3'GAATCC-5'
  3. C5'-CATTAG-3' 3'-GATAAC-5'
  4. D5'-GATACC-3' 3'-CCTAAG-5'

Correct answer

A. 5'-GAATTC-3' 3'-CTTAAG-5'

Step-by-step solution

In a palindrome, the base sequence in the second half of a DNA strand is the mirror image of sequence in first half. But in palindrome with rotational symmetry the base sequence in first half of one strand is mirror immage of second half of complementary strand, e.g., 5'-G A A T T C-3 3-C T T A A G-5
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