Q14 of 50 Page 1

Explain with the help of a suitable example the naming of a restriction endonuclease.

The nomenclature of restriction endonuclease follows a general pattern.


• The first letter is the name of genus in which a given enzyme is discovered is written in capital.


• This is followed by first two letter of species name of organism.


• These three letters are generally written in italics.


eg. Eco from Escherichia coli


Hin from Haemophilus influenza


• Fourth letter represent strain or type identification.


For eg. EcoRI


More from this chapter

All 50 →
12

(i) Name the scientist who suggested that the genetic code should be made of a combination of three nucleotides.

(ii) Explain the basis on which he arrived at this conclusion.


 13

State the disadvantage of inbreeding among cattle. How it can be overcome ?

 15

State how has Agrobacterium tumifaciens been made a useful cloning vector to transfe rDNA to plant cells.

 16

Construct an age pyramid which reflects a stable growth status of human population.