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Although rare in the western world, albinism is quite common in sub-Saharan Africa, likely as a result of consanguineous alliances. [3] Both parents, who may or may not be albinos themselves, must carry the gene if it is to be passed on to the child. Albinism occurs in both males and females and is not specific to any race or ethnic group.
Albinism usually occurs with equal frequency in both sexes. [10] An exception to this is ocular albinism, which it is passed on to offspring through X-linked inheritance. Thus, ocular albinism occurs more frequently in males as they have a single X and Y chromosome, unlike females, whose genetics are characterized by two X chromosomes. [17]
Albinism in molluscs has been recognized to be a hereditary phenomenon at least since 1900. [71] Albinism in molluscs can exist to a variable degree. Sometimes an individual snail has a normally pigmented body, but the shell is completely without the normal pigmentation because of a defect in the cells of the mantle. Shells of certain mollusc ...
Oculocutaneous albinism is a form of albinism involving the eyes , the skin (-cutaneous), and the hair. [1] Overall, an estimated 1 in 20,000 people worldwide are born with oculocutaneous albinism. [1] OCA is caused by mutations in several genes that control the synthesis of melanin within the melanocytes. [2]
In 2002, Whitkop and other scientists examined patients born with white hair, some black locks, and depigmented skin; he diagnosed them as having black lock albinism deafness syndrome (BADS). [1] Those who were closely working with this case suggested that it was an autoimmune disorder rather than a genetic defect.
"[The law says] we can't be prevented from accessing our leases through federal lands." He said he expects Trump’s team to finally allow passage to take advantage of the area's rich ...
Five years after receiving a life-changing stem cell transplant, a 68-year-old man says he’s “extremely grateful” to be essentially cured of acute myelogenous leukemia and in HIV remission.
Heřmanský–Pudlák syndrome (often written Hermansky–Pudlak syndrome or abbreviated HPS) is an extremely rare autosomal recessive [1] disorder which results in oculocutaneous albinism (decreased pigmentation), bleeding problems due to a platelet abnormality (platelet storage pool defect), and storage of an abnormal fat-protein compound (lysosomal accumulation of ceroid lipofuscin).