Agricultural Biotechnology - Study Mode

Explanation

Solution: 1. Rare cutters are restriction enzymes that recognize longer and less frequent sequences in DNA. - These enzymes cut DNA at specific recognition sites, usually 6 to 8 base pairs long. 2. Eco R I is a rare cutter. - It recognizes the specific sequence 5'-GAATTC-3', which occurs less frequently in the genome compared to shorter recognition sequences. 3. Rare cutters are useful in genome mapping and cloning. - They generate larger DNA fragments, making them ideal for analyzing larger genomic regions. 4. Options like Hae III and Alu I are frequent cutters. - They recognize shorter sequences and cut more frequently, producing smaller fragments. 5. Option D is correct as Eco R I is classified as a rare cutter due to its longer recognition sequence.