How many base pairs does Hind II recognize in the DNA?

Six

The correct answer is Option (2)- Six

Restriction endonucleases also called restriction enzymes. These cut the DNA molecules at specific sequences and it is produced by bacteria that cleaves DNA. It cuts the DNA into small fragments in a very precise way and at or near the recognition sites. These are often called molecular scissors.

Hind II recognizes six base pairs in the DNA. The specific recognition sequence for Hind II is composed of six nucleotide pairs, and it cuts the DNA at a particular point within this sequence. This recognition sequence is palindromic, meaning it reads the same on both strands of the double helix when read in the 5' to 3' direction. The ability to recognize and cut at specific recognition sequences makes Hind II and other restriction endonucleases valuable tools in genetic engineering and recombinant DNA technology.