*2 copies of the gene must be mutated for a person to be affected by an ‘auto-somal recessive dis-order’*
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(an affected person usually has unaffected parents who each carry a single copy of the mutated gene (and are referred to as ‘carriers’))
Two unaffected people who each carry one copy of the mutated gene have a 25% risk with each pregnancy of having a child affected by the disorder.
Examples of this type of disorder are Acrodermatitis Enteropathica, Albinism, Medium-chain acyl-CoA dehydrogenase deficiency, cystic fibrosis, sickle-cell disease, Tay-Sachs disease, Niemann-Pick disease, spinal muscular atrophy, and Roberts syndrome.
(certain other phenotypes, such as wet versus dry earwax, are also determined in an ‘autosomal recessive’ fashion)
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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