HEDGESVILLE, W.Va. (AP) _ A 10-year-old boy who suffers from cystic fibrosis will undergo a rare transplant and receive lobes from two other people's lungs: his mother and his grandmother.

Doctors have said Jordy Carper has a year to live if he does not have the surgery.

Doctors will remove one lobe from Melissa Carper's lung and one lobe from Jordy's 51-year-old grandmother, Sherilyn Barnhart. People have three lobes in one lung and two in the other.

The women will lose about 20 percent of their lung capacity, but that does not faze them.

``Would you elect not to give your son a transplant?'' said Mrs. Carper, 28.

Both women matched Jordy's blood type, a prerequisite for the donation, said Steve Rutledge, spokesman at Childrens Hospital Los Angeles, where Jordy is to receive the transplant sometime soon. The exact date hasn't been set.

Cystic fibrosis is America's most prevalent fatal inherited disease, with 30,000 people now afflicted. The disease allows mucus to clog the lungs, where infections can flourish and ultimately lead to death.

The double-lobe transplant operation, an alternative to a transplant of the lungs of someone who has died, is unusual but not unprecedented. In several instances, cystic fibrosis patients have gotten lobes from each of their parents.

Jordy, who is fond of the Power Rangers and comedian Jim Carrey, has been able to maintain an A average even though he can attend school only part-time because of his illness. Sam Huff, a former West Virginia football star and NFL Hall of Famer, befriended the family and helped pay their expenses.

``I'm excited,'' Jordy said. ``I just want to get it done.''