Terms in this set (5) If two people who are both carriers for a genetically inherited fatal recessive disease decide to become parents. There will be a 50% chance (2 out of 4) of having a carrier (Aa) child.
You need two altered (mutated) genes, one from each parent, to have an autosomal recessive condition. In most cases, two carriers can pass on these diseases. However, they have one modified gene (the dominant gene) and one unaffected gene (the recessive gene) for the illness, even though their health is rarely affected.
Autosomal recessive or X-linked inheritance patterns are the two types of recessive genes that are generally accepted. There is a chance that sickness will manifest if the faulty gene is found in two copies. But a dominant hereditary condition results if a disease can only be caused by one faulty gene.
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