Cytogenetics Set 2

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

1. A 19-year-old mentally retarded man with physical findings including brachycephaly and absent distal 5th finger flexion creases develops an acute leukemia:

2. An adult man is healthy and has no significant medical history:

3. A 40-year-old woman gives birth to a baby with bilateral palmar transverse creases, tetralogy of Fallot, brachycephaly, and duodenal atresia. The mother's karyotype is:

4. A fetus is lost at 10 weeks gestation. The placenta is histologically normal. The most common chromosomal abnormality in this setting is:

5. A fetus stillborn at 22 weeks gestation is noted to have an omphalocele, overlapping fingers, micrognathia, small face, short neck, horseshoe kidney, rocker-bottom feet, and atrial septal defect:

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