Which of the following is a Dominant Autosomal Disorder?a)Albinismb)Cy...
Autosomal dominant is one of several ways that a trait or disorder can be passed down through families. In an autosomal dominant disease, if you inherit the abnormal gene from only one parent, you can get the disease. Often, one of the parents may also have the disease. Alzheimer’s disease is an example of such disorder.
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Which of the following is a Dominant Autosomal Disorder?a)Albinismb)Cy...
Understanding Dominant Autosomal Disorders
Dominant autosomal disorders are genetic conditions caused by mutations in genes located on the autosomes (non-sex chromosomes). Only one copy of the mutated gene is sufficient to cause the disorder.
Examples of the Disorders Listed
- Albinism: This is typically a recessive disorder caused by mutations that affect melanin production.
- Cystic Fibrosis: This condition is also recessive and results from mutations in the CFTR gene, affecting mucus production.
- Phenylketonuria (PKU): This is a metabolic disorder caused by a recessive mutation in the PAH gene, leading to the accumulation of phenylalanine.
- Alzheimer's Disease: This condition can have a familial form caused by mutations in certain genes (e.g., APP, PSEN1, PSEN2) that are inherited in a dominant fashion.
Why Alzheimer's Disease is the Correct Answer
- Genetic Inheritance: Alzheimer's Disease can be inherited in a dominant pattern, meaning that inheriting just one mutated copy of the gene from a parent can lead to the manifestation of the disease.
- Familial Cases: The familial form of Alzheimer's typically appears earlier in life and shows a clear pattern of inheritance, distinguishing it from the more common sporadic form.
In summary, among the options provided, only Alzheimer's Disease is classified as a dominant autosomal disorder, while the others are primarily recessive disorders.