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The cutting of DNA at specific locations...

The cutting of DNA at specific locations is become possible due to__________.

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**Step-by-Step Solution:** 1. **Understanding DNA Cutting**: The question asks about the cutting of DNA at specific locations. This process involves enzymes that can cleave nucleic acids. 2. **Identifying the Enzymes**: The enzymes responsible for cutting DNA are known as nucleases. Among these, there are specific types that cut DNA at defined sites. 3. **Focus on Restriction Endonucleases**: The specific enzymes that cut DNA at particular locations are called restriction endonucleases. These enzymes recognize specific sequences in the DNA, known as restriction sites. 4. **Mechanism of Action**: Restriction endonucleases cleave the DNA at or near the restriction site. The exact location of the cut can vary depending on the specific enzyme used. 5. **Examples of Restriction Endonucleases**: - One common example is EcoRI, which recognizes the sequence GAATTC and cuts between the G and A. - Another example is BamHI, which recognizes the sequence GGATCC and cuts between the two Gs. 6. **Conclusion**: Therefore, the cutting of DNA at specific locations has become possible due to restriction endonucleases. **Final Answer**: The cutting of DNA at specific locations has become possible due to **restriction endonucleases**. ---
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Read the following five statements (A to E) and select the option with all correct statements : The cutting of DNA at specific locations became possible with molecular scissors'-restriction enzymes. Palindromes are groups of letters that form the same words read both forward and backward. Sexual reproduction preserves the genetic information, while asexual reproduction permits variation. DNA fragments are positively charged molecules , they can be separated by forcing them to move towards the cathode under an electric field. (E) Each restriction endonuclease recognises a specific palindromic nucleotide sequences in the DNA.