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Many examples of these are vestigial in other primates and related animals, whereas other examples are still highly developed. The human caecum is vestigial, as often is the case in omnivores , being reduced to a single chamber receiving the content of the ileum into the colon .
Ileum, caecum and colon of rabbit, showing Appendix vermiformis on fully functional caecum The human vermiform appendix on the vestigial caecum. The appendix was once believed to be a vestige of a redundant organ that in ancestral species had digestive functions, much as it still does in extant species in which intestinal flora hydrolyze cellulose and similar indigestible plant materials. [10]
For more information on autosomal recessive inheritance, ... Pages in category "Autosomal recessive disorders" The following 200 pages are in this category, out of ...
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]
Pontocerebellar hypoplasia (PCH) is a heterogeneous group of rare neurodegenerative disorders caused by genetic mutations and characterised by progressive atrophy of various parts of the brain such as the cerebellum or brainstem (particularly the pons). [1] Where known, these disorders are inherited in an autosomal recessive fashion. There is ...
Brachyptery is an anatomical condition in which an animal has very reduced wings. Such animals or their wings may be described as "brachypterous". Another descriptor for very small wings is microptery. Brachypterous wings generally are not functional as organs of flight and often seem to be totally functionless and vestigial.
Uner Tan syndrome has been linked to intrafamilial marriage and reproduction, which suggests that it is an autosomal recessive disorder. [3] The syndrome's main characteristic is habitual quadrupedalism, meaning they can stand up straight until they try to move, then they walk on their hands and knees.
The disease is autosomal recessive, and can therefore skip generations.Mutations in either amnionless (AMN) or cubilin can be the culprit. Due to its autosomal recessive pattern of inheritance, affected individuals (persons possessing a homozygous recessive genotype) need to undergo genetic counseling to identify the risk of family members who might be heterozygous genetic carriers.