The Key Lesson Learned by the Fact That Thalidomide Showed

Multiple Choice

The key lesson learned by the fact that thalidomide showed no impact when tested on pregnant rats but led to birth defects in humans is that

A) ​teratogens impact different genotypes differently.
B) ​teratogens impact specific aspects of development.
C) ​teratogen effects may not emerge until later in life.
D) ​teratogen effects are the same regardless of the time when the individual is exposed.