Cytogenetics Set 1

For each of the following patients, select the most likely karyotype:

1. A 30-year-old man has gynecomastia along with decreased size of testes noted on physical exam. He works as a bank executive:

2. Adult men in several generations of a family are mentally retarded. Only a few women are affected, and to a lesser degree. The number of affected persons increases over the generations:

3. A fetus of 32 weeks gestation is stillborn and is noted at autopsy to have postaxial polydactyly, a horseshoe kidney, ventricular septal defect, and cleft lip and palate:

4. A 5-year-old boy develops a retinoblastoma of the left eye:

5. A stillborn female fetus at 18 weeks gestation is noted at autopsy to have hydrops, bilateral cystic hygroma, and coarctation of the aorta:

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