Year of the Fetus
By Beth Marie Mole,
The Scientist
| 12. 18. 2012
In the not-so-distant past, testing an unborn baby for Down syndrome and other severe genetic disorders required a procedure with a long, gruesome needle and an unnerving risk of miscarriage. But this year, doctors and pregnant women around the country welcomed a new option: a painless genetic screen performed on a sample of the mother-to-be’s blood.
Advances in DNA sequencing have given doctors the power to probe the small fraction of fetal DNA coursing through a pregnant woman’s veins. Approximately 3 to 10 percent of the cell-free DNA in a mother’s blood belongs to her baby, and these fetal blueprints are enough to determine if the baby has the wrong number of certain chromosomes—the cause of some inherited diseases, including Down syndrome. And, instead of an invasive procedure at 15 to 20 weeks of pregnancy, doctors can conduct a genetic screen of the mother’s blood as early as week 10 with a standard blood draw.
Though the technology behind non-invasive prenatal genetic testing officially debuted in
October of 2011, this year saw the birth of the first generation of...
Related Articles
By John H. Evans, Craig Callender, Neal K. Devaraj, Farren J. Isaacs, and Gregory E. Kaebnick, Issues in Science and Technology | 07.04.2025
The controversy around a ban on “mirror life” should lead to a more nuanced public conversation about how to manage the benefits and risks of precursor biotechnologies.
About five years ago, the five of us formed a discussion group to...
By Elizabeth Dwoskin and Yeganeh Torbati, The Washington Post | 07.16.2025
A group of well-heeled, 30-something women sat down to dinner last spring at a table set with pregnancy-friendly mocktails and orchids, ready to hear a talk about how to optimize their offspring.
Noor Siddiqui, the founder of an embryo-screening start-up...
By Joel Kotkin, UnHerd | 07.01.2025
Visionaries, dreamers, and autocrats have long dreamt of reshaping humanity to their preferred model. In the last century, eugenics was enthusiastically embraced among Anglo-Saxon elites, then by Communist Russia as a means of creating a hyper-selfless Homo Sovieticus...
By Al Letson, Reveal | 06.28.2025
Photo "Elon Musk Presenting Tesla's Fully Autonomous Future" by Steve Jurvetson on Flickr (CC BY-NC-SA 2.0)
What do Silicon Valley billionaires, religious parents of six, and eugenics-curious biotech founders have in common? Welcome to the world of pronatalism—a growing...