Roberts Syndrome is an extremely rare genetic disorder that is characterized by mild to severe prenatal retardation or disruption of cell division, leading to malformation of the bones in the skull, face, arms, and legs. Shown below is a pedigree for a family with Roberts Syndrome. Consider couple II-C and II-D. What is the probability that their next two children will have Roberts Syndrome?
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A. 1/16
B. 1/32
C. 1/2
D. 1/4
E. 1/8
Answer: A
Biology & Microbiology
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