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A popular example showing this pattern of inheritance is that of the descendants of Queen Victoria and the blood disease hemophilia. [3] The last pattern seen is that X-linked recessive traits tend to skip generations, meaning that an affected grandfather will not have an affected son, but could have an affected grandson through his daughter. [4]
Argininemia. Argininosuccinic aciduria. Arterial tortuosity syndrome. Aspartylglucosaminuria. Atelosteogenesis, type II. Athabaskan brainstem dysgenesis syndrome. Atransferrinemia. Autosomal recessive axonal neuropathy with neuromyotonia. Autosomal recessive GTP cyclohydrolase I deficiency.
An X-linked genetic disease is a disease inherited through a genetic defect on the X chromosome. In human cells, there is a pair of non-matching sex chromosomes, labelled X and Y. Females carry two X chromosomes, whereas males have one X and one Y chromosome. A disease or trait determined by a gene on the X chromosome demonstrates X-linked ...
Dup - Duplication of a gene or genes. C – Whole chromosome extra, missing, or both (see chromosome abnormality) T – Trinucleotide repeat disorders: gene is extended in length. A cherry red spot, which can be a feature of several storage disorders, including Tay–Sachs disease. Disorder. Chromosome. Mutation.
A genetic disorder is a health problem caused by one or more abnormalities in the genome. It can be caused by a mutation in a single gene (monogenic) or multiple genes (polygenic) or by a chromosome abnormality. Although polygenic disorders are the most common, the term is mostly used when discussing disorders with a single genetic cause ...
Template:X-linked disorders. X-linked dystonia parkinsonism. X-linked intellectual disability. X-linked recessive chondrodysplasia punctata. X-linked sideroblastic anemia and spinocerebellar ataxia. X-linked spinal muscular atrophy type 2. XMEN disease. Category: Genetic disorders by inheritance.
Sex linkage. Sex linked describes the sex-specific reading patterns of inheritance and presentation when a gene mutation (allele) is present on a sex chromosome (allosome) rather than a non-sex chromosome (autosome). In humans, these are termed X-linked recessive, X-linked dominant and Y-linked. The inheritance and presentation of all three ...
In medical genetics, compound heterozygosity is the condition of having two or more heterogeneous recessive alleles at a particular locus that can cause genetic disease in a heterozygous state; that is, an organism is a compound heterozygote when it has two recessive alleles for the same gene, but with those two alleles being different from each other (for example, both alleles might be ...