The basic steps involved in the genetic modification of an organism inlcude -

(A) Identification of DNA with desirable genes
(B) Production and clinical trial of drugs
(C) Introduction of the identified DNA into the host
(D) Maintenance of introduced DNA in the host and transfer of the DNA to its progeny

Choose the most appropriate combination from the options given below.

(A), (C) and (D) only

The correct answer is Option (3) → (A), (C) and (D) only 

The basic steps in genetic modification involve the introduction of identified DNA into the host, the maintenance of the introduced DNA in the host, and the transfer of the introduced DNA into the progeny of the host. Identifying DNA with the maximum number of genes is not a step in the genetic modification process; rather, genetic modification focuses on specific genes or genetic elements of interest.

There are three basic steps in genetically modifying an organism —

(i) identification of DNA with desirable genes;

(ii) introduction of the identified DNA into the host;

(iii) maintenance of introduced DNA in the host and transfer of the DNA to its progeny