[Solved] Which of the following chromosomal disorders does not involve abnormal sex chromosomes? A) Turner's syndrome B) XXX syndrome C) Down syndrome D) Klinefelter's syndrome Companies: Legal entities set up to engage in commercial, industrial, or professional activities, often with the goal of generating profit. School Psychologist: A professional who supports students' ability to learn and teachers' ability to teach, applying expertise in mental health, learning, and behavior to help children and youth succeed academically, socially, behaviorally, and emotionally. Nauseated: A feeling of sickness with an inclination to vomit. Doctoral Degree: The highest level of academic degree, awarded after completing extensive research in a specific field of study.