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Mendelian traits in humans. A 50/50 chance of inheritance. Sickle-cell disease is inherited in the autosomal recessive pattern. When both parents have sickle-cell trait (carrier), a child has a 25% chance of sickle-cell disease (red icon), 25% do not carry any sickle-cell alleles (blue icon), and 50% have the heterozygous (carrier) condition. [1]
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.
Werner syndrome has an autosomal recessive pattern of inheritance. Werner syndrome (WS) or Werner's syndrome, also known as "adult progeria ", [1] is a rare, autosomal recessive disorder [2] which is characterized by the appearance of premature aging. [3] Werner syndrome is named after the German scientist Otto Werner. [4]
Tay–Sachs disease is inherited in an autosomal recessive pattern. The HEXA gene is located on the long (q) arm of human chromosome 15, between positions 23 and 24. Tay–Sachs disease is an autosomal recessive genetic disorder, meaning that when both parents are carriers, there is a 25% risk of giving birth to an affected child with each ...
The disease follows an autosomal recessive pattern of inheritance, meaning that an individual must inherit two copies of the mutated gene involved in each cell to develop the condition. [12] In most cases, when a person has this autosomal recessive condition, their parents act as carriers.
Niemann–Pick disease has an autosomal recessive pattern of inheritance. Mutations in the SMPD1 gene cause Niemann–Pick disease types A and B. They produce a deficiency in the activity of the lysosomal enzyme acid sphingomyelinase, that breaks down the lipid sphingomyelin.
Inherited forms of leukodystrophy are usually the result of an autosomal recessive inheritance pattern, although dominant inheritance patterns are not unheard of, as in the case of adult-onset leukodystrophy. [14] This means that the affected allele is carried on an autosomal, or non-sex, chromosome and is masked by the dominant, unaffected ...
Leukocyte adhesion deficiency (LAD) is a rare autosomal recessive disorder characterized by immunodeficiency resulting in recurrent infections. [ 1 ] LAD is currently divided into three subtypes: LAD1, LAD2, and the recently described LAD3, also known as LAD-1/variant. In LAD3, the immune defects are supplemented by a Glanzmann thrombasthenia ...