Final answer:
A drug causing a disruption in embryo or fetus development has teratogenicity. This refers to the substance's ability to cause birth defects as a result of disrupting normal fetal development.
Step-by-step explanation:
A drug that is identified as causing a disruption in embryo or fetus development is recognized as having teratogenicity. Teratogenicity refers to the capability of a substance to cause birth defects. These defects are typically related to the disturbance of the normal development of an embryo or fetus. Teratogens can be a variety of substances, including certain drugs, chemicals like alcohol or cigarette smoke, and some environmental factors.
The potency of the drug as a mutagen, the susceptibility of the fetus to teratogenesis, and the dose of the teratogen are key factors influencing the degree of teratogenic effects on fetal development. Teratogens like Thalidomide illustrate the impact such substances can have, as they can create severe and permanent developmental abnormalities.