One of the rarest genome mutations, in which the affected infant has a cleft palate, abnormal heart, and developmental delays and usually does not survive beyond 6 months because of trisomy 13, is which of the following syndromes?

Question

Quizplus · Accepted Answer

The symptoms described in the question (cleft palate, abnormal heart, developmental delays) are characteristic of Patau syndrome, which is caused by trisomy 13 (having an extra copy of chromosome 13). Down syndrome is caused by trisomy 21, Turner syndrome is a sex chromosome abnormality (lacking or partially missing an X chromosome), and Edwards syndrome is caused by trisomy 18. None of these syndromes present with the exact symptoms described in the question.

One of the Rarest Genome Mutations, in Which the Affected