One parent is a carrier for a recessive disease.The other parent is not a carrier and does not have the disease.Is it necessary for the fetus to undergo prenatal genetic screening to determine if she has the disease?

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If one parent is a carrier for a recessive disease and the other parent is not a carrier, there is a 50% chance that the fetus will be a carrier for the disease and a 50% chance that they will not be a carrier. If the fetus is a carrier, they will not have the disease themselves. Prenatal genetic screening would only identify if the fetus inherited the recessive gene, but it wouldn't tell if the fetus will be affected by the disease or will only be a carrier. Therefore, it is not necessary to undergo prenatal genetic screening for this particular case.

One Parent Is a Carrier for a Recessive Disease