Affected children can come from unaffected parents.Group of answer choicesautosomal recessive disorderautosomal dominant disorder
Question
Affected children can come from unaffected parents.
Group of answer choices:
- autosomal recessive disorder
- autosomal dominant disorder
Solution
To determine whether the scenario described fits an autosomal recessive or autosomal dominant disorder, we need to consider the inheritance patterns of these types of genetic disorders.
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Autosomal Recessive Disorder: In this type of disorder, an affected individual must inherit two copies of the recessive allele (one from each parent) to express the phenotype. Parents of affected individuals can be carriers (having one copy of the recessive allele) but appear unaffected. Thus, it is possible for unaffected parents to have affected children.
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Autosomal Dominant Disorder: In contrast, for an autosomal dominant disorder, only one copy of the dominant allele is required for an individual to be affected. An affected individual usually has at least one affected parent. Therefore, unaffected parents cannot have affected children.
Conclusion
Given the information that affected children can come from unaffected parents, we conclude that this scenario aligns with autosomal recessive disorder. In such disorders, unaffected parents can indeed produce affected offspring when both are carriers of the recessive allele.
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