Q.

A specific recognition sequence identified by endonucleases to make cuts at specific positions within the DNA is              [2021]

1 poly (A) tail sequences  
2 degenerate primer sequence  
3 okazaki sequences  
4 palindromic nucleotide sequences  

Ans.

(4)

A restriction endonuclease recognises a specific palindromic nucleotide sequence to make a cut at specific position within the DNA.