Assertion: Recombinant colones will produce blue colour in the medium having X-gal compound
Reason :The 'gal gene' of vecotr undergone insertional inactivation

In a bacterial culture, some of the colonies produced blue colour in the presence of a chromogenic substrate and some did not due to the presence or absence of an insert (rDNA) in the coding sequence of beta - galactosidase. (a) Mention the mechanism and the steps involved in this experiment. (b) How is it advantageous over simultaneous plating on two plates having different antibiotics?

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.

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. A) Both statements 1 and 2 are correct B) statement 1 is correct but statement 2 is incorrect C) statement 1 is incorrect but statement 2 is correct D) Both statements 1 and 2 are incorrect

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. A) Both statements 1 and 2 are correct B) statement 1 is correct but statement 2 is incorrect C) statement 1 is incorrect but statement 2 is correct D) Both statements 1 and 2 are incorrect

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. A) Both statements 1 and 2 are correct B) statement 1 is correct but statement 2 is incorrect C) statement 1 is incorrect but statement 2 is correct D) Both statements 1 and 2 are incorrect

After insertion of DNA segment within the sequence of Z-gene of bacteria, they are grown on chromogenic substrate. After the growth of bacterial colonies, they are identified as (i) Recombinants if colonies are blue-coloured (ii) Recombinants if colonies are blue coloured (iii) Non-recombinants if colonies are blue-coloured (iv) Non - recombinants if colonies are white coloured

Assertion (A) Appearance of blue or green colour in the name in Beilstein test indicates the presence of halogen in the given organic compound. Reason (R ) Certain compounds such as urea or thio urea respond to Beilstein test even in the absence of halogen.

After insertion of DNA segment within the sequence of Z-gene of bacteria, they are grown on chromogenic substrate. After the growth of bacterial colonies, they are identified as (i) Recombinants if colonies are blue-coloured (ii) Recombinants if colonies are white coloured (iii) Non-recombinants if colonies are blue-coloured (iv) Non - recombinants if colonies are white coloured