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We can also and will be able to use stem cell technology to make tens of thousands of eggs. and because the cost of sequencing is moving toward investigation eligibility, so instead of 10,000 eggs you have 15,000, and you sequence the cells from the preimplanted embryos, you have a wider range of choice and can choose things. on top of that, there's human gene editing tools. now people are aware of crisper but there will be more effective ones in the future. on top of that we'll be able to make a relatively small number of edits to these pre-- hiefpred blows. >> you point out -- embryos. >> yo...

That when an embryo is created, it is important for the mother and father, the people who created the embryo, to agree in advance and in writing how the embryos are going to be handled. >> if they break up. >> if they break up. if something happens -- >> somebody dies. that it's very important to des ignite how these are going to be handled. because once you don't designate it, it can wind up in the court and frankly, this is an area in terms of ownership of embryos that is very unsettled under the law. >> laura, there's another wrinkle to this case. and that is a couple of weeks ago, sofia ve...

Attempt to try to elevate embryos into something they are not under the law. but at the moment at least this lawsuit is going to be thrown out. >> laura, nick loeb has told cnn this is not his lawsuit so how do these two embryos, how did this even happen? who's acting on their behalf? >> well the thing is in louisiana has the only state in the union that has some laws to give some right to embryos, preimplanted embryos. so it's a trustee who is acting on behalf of these two embryos saying that, listen, sofia vergara is denying them the right to have access to an inheritance in the form of a tr...

Think this is not a case that will see much light. but for the fact that you've got competing interests in the viability argument when it comes to pro-life and pro-choice arguments. >> we know actually a little bit more about these embryos. they are apparently both female embryos. they have names. in this lawsuit. emma and isabella. they have requested that nick loeb, their biological father get custody of them and let them live. he would like custody of them. he had been fighting for a couple of years to get custody of them. something sofia vergara did not want. she does not want them to be b...

Modern family star sofia vergara is facing an unusual twist in the battle over her frozen embryos. a right to live lawsuit has been filed against her by those two embryos. vergara's former fiance nick lobe dropped his original lawsuit against her in which he tried to get custody of the embryos that the two of them had created when they were a couple. he says he has nothing to do with this new lawsuit. let's discuss this with cnn senior legal analyst jeffrey toobin and cnn legal analyst laura coates. jeffrey, how do two embryos file a lawsuit? >> they don't. i think this lawsuit is going to be ...