A six year old girl is found to have mild mental retardation, bilateral limb defects (polydactyly), and a congenital heart defect. Which of the following categories of disease is LEAST likely?
A six year old girl is found to have mild mental retardation, bilateral limb defects (polydactyly), and a congenital heart defect. Which of the following categories of disease is LEAST likely?
A. Single gene disorder B. Chromosomal disorder C. Polygenic disorder D. Multifactorial disorder E. All of the above are possibilities, and should be considered in the diagnosis of this patient.
