AP BIOLOGY

Detailed explanation-1: -Definition. Transgenic refers to an organism or cell whose genome has been altered by the introduction of one or more foreign DNA sequences from another species by artificial means. Transgenic organisms are generated in the laboratory for research purposes.

Detailed explanation-2: -The term transgenic animal refers to an animal in which there has been a deliberate modification of the genome-the material responsible for inherited characteristics-in contrast to spontaneous mutation (FELASA September 1992, revised February 1995).

Detailed explanation-3: -Transgenic organisms contain foreign DNA that has been introduced using biotechnology. Foreign DNA (the transgene) is defined here as DNA from another species, or else recombinant DNA from the same species that has been manipulated in the laboratory then reintroduced.

Detailed explanation-4: -Moreover, the genetic material of animals is DNA so RNA based options are incorrect and as the cells carrying foreign genes divide mitotically. So the correct answer is option “C” that is the transgenic animals are those which have foreign DNA in all its cells.

Detailed explanation-5: -Transgenesis is an extremely powerful tool for the genetic analysis and manipulation of mice and other animals. As defined above, a transgene is an experimentally introduced DNA segment carried in the genome of a host animal.