例句與造句

1. The restriction enzymes studied by Arber and Meselson were type I restriction enzymes, which cleave DNA randomly away from the recognition site.
2. Unlike type I restriction enzymes, type II restriction endonucleases perform very specific cleaving of DNA . Type I restriction enzymes recognize specific sequences, but cleave DNA randomly at sites other than their recognition site whereas type II restriction enzymes cleave only at their specific recognition site.
3. Unlike type I restriction enzymes, type II restriction endonucleases perform very specific cleaving of DNA . Type I restriction enzymes recognize specific sequences, but cleave DNA randomly at sites other than their recognition site whereas type II restriction enzymes cleave only at their specific recognition site.
4. It's difficult to find type i restriction enzyme in a sentence. 用type i restriction enzyme造句挺難的