Mathematics

Alanna Nelson

23 July, 19:15

Ned and Stacey are the parents of Mark, a child affected with Fellweger syndrome, an autosomal recessive disorder that is easily diagnosed at birth, and that occurs in the population with an incidence of 1/3600. Neither Ned nor Stacey has Fellweger syndrome. Their next child, Tony, is born without any apparent signs of the disease. Tony grows up and marries Maria, a woman with no known family history of Fellweger syndrome. The chance that Tony and Maria’s first child will be affected with Fellweger syndrome is closest to which of the following numbers? Select one:a. 1/240b. 1/120c. 1/360d. 1/4