When genes are passed from parent to offspring, the event is called

A. Bacteriostatic agent: Bacteriostatic agents prevent bacterial multiplication so the host immune system can eliminate the organisms, without directly killing them.

B. Bactericide: A bactericidal agent kills bacteria rather than merely inhibiting their growth.

C. Sanitizer: A sanitizer reduces microbial numbers to safe levels but does not specifically denote whether it kills or only inhibits growth.

D. Antiseptic: Antiseptics are used on living tissue to reduce microbial load and can be either inhibitory or lethal depending on the agent and concentration.

A. Use of microorganisms to produce useful products: This describes biotechnology in general but not specifically recombinant DNA technology.

B. Selective breeding of organisms to create new combinations of traits: Selective breeding involves natural mating, not direct genetic modification.

C. Study of replication and recombination in microbes: This is part of microbial genetics, not recombinant DNA technology.

D. Study of genetic expression in microbes: This focuses on gene regulation, not the deliberate manipulation of DNA.

E. Deliberate modification of the genome of an organism for practical purposes: This defines recombinant DNA technology, which involves inserting, deleting, or altering genes to achieve specific outcomes.