1 MCQs in Pediatrics for NEET PG
A newborn girl is delivered by emergency caesarean section for polyhydramnios and intrauterine growth restriction. On examination, she has a prominent occiput, micrognathia, low-set malformed ears, clenched fists with characteristic overlapping fingers (index over 3rd, 5th over 4th), and rocker-bottom feet. Echocardiography reveals a large VSD and PDA; renal ultrasound shows a horseshoe kidney. The karyotype analysis shows the abnormality marked as **D** in the diagram. Which of the following best describes the chromosomal abnormality and its primary etiology in this case?
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