A karyotype of the conditions Trisomy 21 (Down syndrome) and Double-X (female)
I had reason to refer to a column of mine, published a few years ago, called “My Daughter’s Paradoxical Genes.” It addresses the paradox of the ACOG recommendation that all women be offered prenatal testing for Down syndrome, but a separate ACOG ethics committee condemns the use of prenatal testing for sex selective abortion. The column remains one of my favorites, and the paradox still has yet to be explained by ACOG. You can read the full article at this link.
[…] club foot, dwarfism–and these often are not detected until after 20 weeks. Indeed, the most selected against genetic condition based on sheer numbers of abortions is one that is also not detected until at or after 20 weeks: […]