BOTANY

Detailed explanation-1: -Special sequence in the DNA recognised by restriction endonuclease is called palindromic nucleotide sequence. Restriction endonuclease enzymes are also known as molecular scissors or biological scissors or chemical knives or chemical scalpels. So, the correct answer is ‘Endonucleases’.

Detailed explanation-2: -: an enzyme that breaks down a nucleotide chain into two or more shorter chains by cleaving the internal covalent bonds linking nucleotides compare exonuclease.

Detailed explanation-3: -Restriction enzyme cuts the DNA double helix in a very precise way. It cleaves DNA into fragments at or near specific recognition sites within the molecule known as restriction sites. Hence, restriction enzyme is also called as ‘molecular scissor’ or ‘knife of DNA’.

Detailed explanation-4: -Restriction endonuclease enzymes cut the DNA strands from within and at specific sites. These sites are known as recognition sequences. Every restriction endonuclease has a specific sequence and cuts the DNA wherever the sequence is encountered.

Detailed explanation-5: -Restriction endonucleases are enzymes which scan the DNA molecule for a particular nucleotide sequence. These are called recognition sequences. Once the endonuclease finds this sequence it halts and cuts the strand. Thus the correct answer is option C.