Mr. and mrs. lehman have sought genetic counseling. mrs., Ask an Expert

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Mr. and Mrs. Lehman have sought genetic counseling. Mrs. Lehman is concerned because she is unexpectantly pregnant and her husband's brother died of Tay-Sachs disease. She can recall no incidence of Tay-Sachs disease in her own family. Do you think biochemical testing should be recommended to detect the deleterious gene in Mrs. Lehman?

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