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Autosomal dominant disorders

Autosomal dominant disorders are a group of genetic conditions characterized by specific inheritance patterns. To understand these disorders, let's explore their fundamental features:


Key ConceptsDescription
1. Dominant VariantsAutosomal dominant disorders result from a genetic condition caused by a variation in one copy of a gene. A single mutated allele is sufficient to cause the disease.
2. Autosomal InheritanceAutosomal dominant conditions involve genes located on autosomes, which are non-sex chromosomes (chromosomes 1-22). These disorders are not linked to sex chromosomes (X and Y).
3. Inheritance from Either ParentIndividuals can inherit autosomal dominant disorders from either parent. It is not restricted to one specific parental lineage.
4. Probability of Passing OnWhen affected individuals have children, there is a 50% chance of passing on the faulty gene to their offspring. Similarly, there is a 50% chance of passing on a normal copy of the gene. This probability is independent of the child's gender and is random for each pregnancy.
5. Equal Effect on Males and FemalesAutosomal dominant disorders typically affect both males and females in the same way, without gender bias in their expression.
6. Generation-to-Generation TransmissionThese conditions are passed down from one generation to the...

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