L
Listener
Guest
Yes, this is a good explanation. Some children were born using this method, and I’m sure they were real humans. Only the nuclear DNA provides the characteristics the child will have, such as hair and eye color, body type, etc., and the child gets that from both of the parents as usual. Mitochondrial DNA allows energy to be created. It is the cell’s powerhouse. Mitochondrial DNA is normally passed from mother to daughter, and the daughter passes it to her children. Men have it too. They couldn’t live without it. Men get it from their mothers, but they can’t pass it on to anyone, because their sperm does not have any. It sounds to me like each woman had part of her egg destroyed, but no embryo was destroyed. The child will still look like the mother and father.Unfortunately, the creation of this life using the DNA of three parents does result in the destruction of the egg of the mother who is donating her mitochondria. Here is an explanation of the IVF procedure:
The mother with the mitochondrial disease gene contributes her egg, the father provides his sperm, and a third woman donates a healthy egg. The lab carefully removes the nuclear DNA from the second egg, leaving the healthy mitochondria intact. The lab then injects the nuclear DNA from the mother. A single sperm is injected into the new, healthy egg, and the embryo is implanted into the mother’s womb. This embryo then will have the nuclear DNA from one mother, nuclear DNA from the father, and mitochondrial DNA from a third parent.
As you see, the egg from the mitochondria donor is destroyed when all of the nuclear DNA is removed, except for the healthy mitochondria.
It is a scary process anytime you’re fooling with someone’s genes, but I’m not sure that that it is any more immoral than regular in-vitro fertilization. By doing this, they saved the child from inheriting a terrible disease.