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Home Questions 5GBSP32ZT7
Target Exam

CUET

Subject

Biology

Chapter

Biotechnology -Principles and Processes

Question:

Which among the following is a palindromic sequence ?

Options:

5' —— CTTAC —— 3'

3' —— CTTAAG —— 5'

5' —— GAATTC —— 3'

3' —— GTTAAC —— 5'

5' —— GAATTC —— 3'

3' —— CTTAAG —— 5'

5' —— GAATTC —— 3'

3' —— GAATTC—— 5'

Correct Answer:

5' —— GAATTC —— 3'

3' —— CTTAAG —— 5'

Explanation:

Palindromes are groups of letters that form the same words when read both forward and backward, e.g., “MALAYALAM”. 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' à 3' direction. This is also true if read in the 3' à 5' direction. 5' —— GAATTC —— 3' 3' —— CTTAAG —— 5'

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