So if they want a boy , they'll use one fraction . If they want a girl , they'll use different fraction and then to use those fractions in the context of what's called IU I or intrauterine insemination , which is as the name suggests , rather than having the man deliver the ejaculate with his penis and the sperm with his penis . They have uh a device , you know , the devices are now commercially sold , believe it or not , they're sold over the counter and on the internet .
We haven't talked too much about in vitro fertilization . But in vitro fertilization involves as the name suggests taking an egg and taking a sperm , pairing them in a dish . This can be done a number of different ways .
And what these clinics have figured out is that if they spin the sperm sample at the correct spin rate that the sperm that will give rise to male offspring and the sperm that will give rise to female offspring segregate out into different fractions , allowing them to take each of those fractions separately and to apply them to eggs . If it's in vitro fertilization and give rise very reliably , certainly much more than chance to either male or female embryos . They also , of course , can choose to do this outside the context of in vitro fertilization .
There are now emerging methods that people are using in order to separate out the sperm that will indeed give rise to a male offspring versus a female offspring . Now , this of course is done in the context of in vitro fertilization . We haven't talked too much about in vitro fertilization .
So , selecting for healthy chromosomal arrangements is always paramount but some people are selecting for biological sex . And indeed , some couples who can conceive naturally are opting for IU I in order to be able to select biological sex because of this ability to spin out the sperm samples to um different fractions and select the male or female sperm . That is the the sperm that would give rise to a male or female offspring .
