NURS C475 QUIZ / NURS C475 QUIZ 3. QUESTIONS AND ANSWERS.

Which condition provides the greatest support for a strong genetic contribution to autism spectrum disorders (ASDs)? Select one: a. ASDs are more likely to occur in children of parents who are over 35 at time of conception. b. Concordance among dizygotic twins is 10%. c. People with some neurologic disorders also have features of ASDs. d. Males are affected four times more frequently than females. Feedback The correct answer is: Concordance among dizygotic twins is 10%. Question 2 Correct 1 points out of 1 Flag question Question text Which statement best describes the role of tumor suppressor genes in cancer development? Select one: a. The presence of tumor suppressor genes increases the risk for gene damage by environmental carcinogens. b. Tumor suppressor genes reduce/suppress immune function, increasing the risk for cancer development. c. Tumor suppressor genes control or modify the activity of oncogenes, reducing the risk for cancer development. d. Tumor suppressor genes are a type of oncogene that is only active in germ line cells and tissues. Feedback The correct answer is: Tumor suppressor genes control or modify the activity of oncogenes, reducing the risk for cancer development.