The chances of Sam and Diane's healthy child not carrying Tay-Sachs disease will be 75 percent.
The Tay-Sachs infection is caused by a change in the HEXA gene. Tay–Sachs illness is an autosomal passive hereditary clutter, meaning that when both guardians are carriers, there's a 25% hazard of giving birth to an influenced child with each pregnancy.
A changed duplicate of the quality is passed from each parent to the influenced child. The causes are hereditary.
Tay-Sachs disease is a metabolic hereditary clutter that appears a dynamic weakening of mental and physical capacities due to nerve harm in the brain and spinal rope. It comes about in loss of muscle control and the long run, leads to visual impairment, loss of motion, and passing.
In this case, Sam and Diane have the recessive alleles for Tay-Sachs disease, so the healthy baby will have a 75percent chance of not having the disease.
Learn more about Tay-Sachs disease at
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