Which statement is not true about teratogens?

Question

Quizplus · Accepted Answer

Teratogens are environmental rather than genetic factors.Teratogens are adverse environmental influences and include infections,drugs,and exposure to radiation.
Teratogens can cause birth defects.
Fetal alcohol syndrome can occur in an infant when the mother drinks alcohol during pregnancy; therefore,drinking alcohol during pregnancy is considered a teratogen.
Taking antibiotics,particularly tetracycline,during pregnancy can have an adverse effect on the teeth; therefore,it is true that antibiotics can be considered a teratogen.

Which Statement Is Not True About Teratogens