Recombinant Dna Tools
Easybiology
Restriction endonucleases recognize specific sequences and perform:
Select the correct option:
Solution
Incorrect! Answer:
Cleavage at specific sites
- Identity: Restriction endonucleases are known as 'molecular scissors'.
- Recognition: Each restriction enzyme inspects the length of a DNA sequence until it finds its specific recognition sequence (usually a palindromic sequence).
- Function: Once found, it binds to the DNA and cuts (cleaves) each of the two strands of the double helix at specific points in their sugar-phosphate backbones.
- Role: This property is essential for creating recombinant DNA molecules by cutting different DNA sources with the same enzyme to produce matching 'sticky ends'.
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About This Question
- Subject
- biology
- Chapter
- biotechnology and its applications
- Topic
- recombinant dna tools
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Cleavage at specific sites
- Identity: Restriction endonucleases are known as 'molecular scissors'.
- Recognition: Each restriction enzyme inspects the length of a DNA sequence until it finds its specific recognition sequence (usually a palindromic sequence).
- Function: Once found, it binds to the DNA and cuts (cleaves) each of the two strands of the double helix at specific points in their sugar-phosphate backbones.
- Role: This property is essential for creating recombinant DNA molecules by cutting different DNA sources with the same enzyme to produce matching 'sticky ends'.
This easy difficulty biology question is from the chapter biotechnology and its applications, covering the topic of recombinant dna tools. It appeared in the 2025 exam.
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