" Bacterial colonies that have a foreign DNA fragment inserted in to the plasmid will appear white because- "

Read the given statements and select the correct option Statement 1 : In insertional inactivation, blue colour produced by bacterial colonies indicates that the plasmid does not have an insert into the bacterial genome. Statement 2: Presence of insert results into insertional inactivation of beta -galactosidase enzyme and the colonies do not produce any colour.

The colonies of recombinant bacteria appear white in because of

The different steps of recombinant DNA technology are given below randomly. (i) Isolation of the DNA fragments or genes to be cloned (ii) Introducting of the recombinant DNA into a suitable cell (usually E. coil) called host (transformation) (iii) Multiplication/expression of the introduced gene in the host (iv) Selection of the transformed host cells, and identification of the clone containing the desired gene/DNA fragment (v) Insertion of the isolated gene in a suitable plasmid vector Which of the following represents the correct sequences of steps ?

Bacterial plasmids contain only DNA which is

During gene cloning, the enzyme used to join and insert DNA within plasmid is

In pBR 322 amp^(R) and "tet"^(R) gene are present. When we ligate a foreign DNA at Pst-I site, then recombinant plasmids will lose the resistance to the

Materials that have a color, such as dyed textiles and painted walls, appear colored because of the absorption of light. When white light falls on a substance that absorbs red light, the color components that are not absorbed are reflected. The substance thus appears.