The incidence of edward's syndrome is estimated to one in 3,000 live births and this increases as the mother's age increases. the syndrome has a very low rate of survival, resulting from heart abnormalities, kidney malformations, and other internal organ disorders. based on the karyotype, what would be another name for edward's syndrome? a) trisomy x b) trisomy 18 c) monosomy y d) monosomy 18