Angelman Syndrome (AS) is a rare neurogenetic disorder that affects approximately one in 15,000 individuals. It is characterized by severe developmental delay, intellectual disability, and difficulty communicating and walking. People with Angelman Syndrome also have distinctive facial features, and often have seizure disorders and sleep disturbances.
The cause of Angelman Syndrome is typically a mutation or deletion of the maternal chromosome 15q11-q13. In most cases, the mutation occurs spontaneously, and is not inherited from either parent. However, in rare cases, Angelman Syndrome can be inherited in an autosomal dominant manner.
Autosomal dominant inheritance occurs when a gene mutation is inherited from only one parent. In the case of Angelman Syndrome, the parent must be the mother and the mutation must be on chromosome 15. If the mother has a mutation on chromosome 15, there is a 50% chance that the child will have Angelman Syndrome.
In conclusion, Angelman Syndrome is usually not inherited, but in rare cases, it may be inherited in an autosomal dominant manner. If the mother has a mutation on chromosome 15, there is a 50% chance that the child will have Angelman Syndrome.