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Dwarfism is a condition of people and animals marked by unusually small size or short stature. [1] In humans, it is sometimes defined as an adult height of less than 147 centimetres (4 ft 10 in), regardless of sex; the average adult height among people with dwarfism is 120 centimetres (4 ft).
Two dwarfs as depicted in a 19th-century edition of the Poetic Edda poem Völuspá (1895) by Lorenz Frølich. A dwarf (pl. dwarfs or dwarves) is a type of supernatural being in Germanic folklore. Accounts of dwarfs vary significantly throughout history; however, they are commonly, but not exclusively, presented as living in mountains or stones ...
People with achondroplasia are often born to parents that do not have the condition due to spontaneous mutation. [22] Where achondroplasia is inherited, its pattern is autosomal dominant. In couples where one partner has achondroplasia there is a 50% chance of passing the disorder on to their child every pregnancy.
Dwarfing is a process in which a breed of animals or cultivar of plants is changed to become significantly smaller than standard members of their species. The effect can be induced through human intervention or non-human processes, and can include genetic, nutritional or hormonal means.
Because of this, we see the dwarf allele greatly contributes to the small size of dwarfs, but it is also a lethal autosomal recessive mutation. [1] Kits (rabbit young) homozygous for the dwarf allele (dwdw) are often referred to as "peanuts", and although viable up to birth, die days afterwards.
Brown dwarfs are substellar objects that have more mass than the biggest gas giant planets, but less than the least massive main-sequence stars.Their mass is approximately 13 to 80 times that of Jupiter (M J) [2] [3] —not big enough to sustain nuclear fusion of ordinary hydrogen (1 H) into helium in their cores, but massive enough to emit some light and heat from the fusion of deuterium (2 H).
There are several proposed explanations for the mechanism which produces such dwarfism. [3] [4]One is a selective process where only smaller animals trapped on the island survive, as food periodically declines to a borderline level.
Little People of America (LPA) is a 501(c)(3) non-profit organization which provides support, resources, and information to individuals with dwarfism and their families.