Most people can carry gene mutations that, potentially, could cause a health problem, even though they do not have the problem themselves. With some conditions, if they conceive with a partner who carries the same type of gene, every child they conceive will have a 1 in 4 chance of being born with the condition.
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Carrier screening can detect if a parent is a carrier of Spinal Muscular Atrophy.
Carrier screening can detect if a parent is a carrier of Cystic Fibrosis.