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If both parents are "carriers" of a cystic fibrosis allele, what are the odds of passing it on?

1 doctor weighed in
Dr. James Ferguson
Pediatrics

In brief: 50%/time

Carrier parents pass either the normal or affected gene at equal(50%) frequency any time they conceive.
In a million random parings, 25% would result in cf, 25% in non-carrier & 50% carriers. In practice, the parents could produce all cf, all carrier or all non- carrier kids.

In brief: 50%/time

Carrier parents pass either the normal or affected gene at equal(50%) frequency any time they conceive.
In a million random parings, 25% would result in cf, 25% in non-carrier & 50% carriers. In practice, the parents could produce all cf, all carrier or all non- carrier kids.
Dr. James Ferguson
Dr. James Ferguson
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