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PEDIGREE/ KARYOTYPE
These are two examples of autism pedigrees. Because the exact cause of autism isn't known yet and autism is very complex, autism pedigrees vary a lot. Researchers are still trying to figure out whether autism is dominant, recessive, or sex-linked.
Although there are various causes of autism, the fragile X is one of the most common contributors. Surveys revealed visible chromosomal anomalies in 7.4% of autistic patients, among the most consistent cytogenetic findings are fragile-x and duplication of maternal chromosome 15q11–13 [4].
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