HDFS 129 Name ________________________ Fall 1996 Section 1 Quiz #4--Chapter 5--Bigner (1996) 1. Polygenic defects are MOST likely to occur during the _____________ stage of prenatal development, since these problems can be caused by factors such as drugs and infectious diseases. a. germinal. b. fetal. c. zygotic. d. embryonic. 2. Which of the following statements is TRUE regarding amniocentesis? a. Amniocentesis can be performed much earlier than chorionic villus sampling. b. Gross physical abnormalities are best identified with amniocentesis. c. Amniocentesis involves using sound waves to detect chromosomal disorders. d. Chromosomal disorders such as Down's syndrome are identified by amniocentesis. Section B. Short essay. Use complete sentences. (6 points). 3. Is the transition to parenthood a "crisis"? Support your answer.