Personality disorders are categorized into three main clusters that include all of the following EXCEPT:

A disorder resulting from exposure to a major stressor, with symptoms of anxiety, nightmares, poor sleep, reliving the event, and concentration problems, lasting for more than one month is called __________

a) acute stress disorder. b) external locus of control. c) catastrophic stress. d) post-traumatic stress disorder (PTSD).

A segment of the DNA strand that provides specific instructions for a particular structure, trait, or function is called a

A) genome. B) nucleotide. C) gene. D) chromosome.