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A. Abdallat–Davis–Farrage syndrome; Abetalipoproteinemia; Absent tibia-polydactyly-arachnoid cyst syndrome; Acanthosis nigricans-muscle cramps-acral enlargement syndrome
Autosomal recessive pattern, showing how two unaffected carriers can have a child with the disease. Some genetic disorders are caused by having two "bad" copies of a recessive allele. When the gene is located on an autosome (as opposed to a sex chromosome), it is possible for both men and women to be carriers .
Autosomal dominant and autosomal recessive inheritance, the two most common Mendelian inheritance patterns. An autosome is any chromosome other than a sex chromosome.. In genetics, dominance is the phenomenon of one variant of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome.
Wiedemann–Rautenstrauch (WR) syndrome (German pronunciation: [ˈviːdəman ˈʁaʊtn̩ʃtʁaʊx]), also known as neonatal progeroid syndrome, [1] is a rare autosomal recessive progeroid syndrome. There have been over 30 cases of WR. [2] WR is associated with abnormalities in bone maturation, and lipids and hormone metabolism. [3]
In most of the families reported so far, tetra-amelia syndrome appears to have an autosomal recessive pattern of inheritance. [ 1 ] [ 2 ] This means the defective gene responsible for the disorder is located on an autosome , and two copies of the defective gene (one inherited from each parent) are required in order to be born with the disorder.
The "autosomal" aspect of the disease means that the gene mutation occurs in an autosome, which is one of the 44 chromosomes in the human body that is not a sex chromosome (chromosome X or Y). Although the majority of cases are due to the autosomal dominant gene, there have been reports of a rare, autosomal recessive version of the disease. [16]
3C syndrome is an autosomal recessive disease, caused by a mutation on the long arm of chromosome 8 at 8q24.13, the locus for KIAA0196, [4] the gene for the protein strumpellin. Strumpellin is highly expressed in skeletal muscle cells and mutations in it are also associated with spastic paraplegia .
Human genetics is the study of inheritance as it occurs in human beings.Human genetics encompasses a variety of overlapping fields including: classical genetics, cytogenetics, molecular genetics, biochemical genetics, genomics, population genetics, developmental genetics, clinical genetics, and genetic counseling.