True about Transgenic process is - a) Removing DNA from a cellb) Inserting DNA into a cellc) Tumor carcinogenesis can be studiedd) In "Knock out" animals a specific gene is targetted for inducing mutation or inactivation

Transgenic                                                                                                                                                                                           Describing the introduction of new DNA into germ cells by its injection into the nucleus of the ovum. In this process, one is adding one or more copies of a gene to the genome and there is no way to control where that gene will eventually reside. Targeted knockin Introduction of subtle mutation into gene by substitution of the endogenous gene with gene carrying a specific mutation homologous recombination in the embryonic stem cell. Forward genetics Mutation created randomly by ENU (N-ethyl-N-nitro urea) Cloning Introduction of a nucleus into enucleated eggs (nuclear transfer).