Most psychologists eventually rejected the method of trained introspection in psychological research as being too

Which of the following statements regarding sex chromosome abnormalities is TRUE?

A) Sex chromosome abnormalities cause physical but not cognitive or social difficulties. B) Sex chromosome abnormalities are among the most common human genetic disorders. C) Sex chromosome abnormalities are extremely rare occurring in only 1 out of 100,000 births. D) Sex chromosome abnormalities typically lead to pregnancy loss or early death of the infant.

Regarding the causes of the different sexual orientations, researchers have begun to focus on the scientific study of how genes are expressed during development, which is called __________

Fill in the blank(s) with correct word