"All through pregnancy, some of the fetus's DNA circulates in the [Expecting man or woman's] bloodstream," states Dr. Bortoletto. "Screening this DNA makes it possible for us to find out the chromosomal make-up from the fetus. We can also figure out the chromosomal sex on the fetus this way also." https://waylonraiqx.vidublog.com/27475017/a-review-of-ramzi-theory