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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.
Dwarfism can result from many medical conditions, each with its own separate symptoms and causes. Extreme shortness in humans with proportional body parts usually has a hormonal cause, such as growth hormone deficiency , once called pituitary dwarfism .
Achondroplasia is a genetic disorder with an autosomal dominant pattern of inheritance whose primary feature is dwarfism. [3] It is the most common cause of dwarfism [4] and affects about 1 in 27,500 people. [3] In those with the condition, the arms and legs are short, while the torso is typically of normal length. [3]
Cornelia de Lange syndrome has a widely varied phenotype, meaning people with the syndrome have varied features and challenges. The typical features of CdLS include thick or long eyebrows , a small nose , small stature, developmental delay, long or smooth philtrum , thin upper lip and downturned mouth .
“Little People, Big World” star Zach Roloff and his three children, Jackson, 6, Lilah, 4, and Josiah, 23 months, all have dwarfism. While Zach has been living with the genetic condition for 33 ...
Spondyloepiphyseal dysplasia congenita (abbreviated to SED more often than SDC) is a rare disorder of bone growth that results in dwarfism, [1] characteristic skeletal abnormalities, and, in some instances, problems with vision and hearing.
Primordial dwarfism (PD) is a form of dwarfism that results in a smaller body size in all stages of life beginning from before birth. [1] More specifically, primordial dwarfism is a diagnostic category including specific types of profoundly proportionate dwarfism, in which individuals are extremely small for their age, even as a fetus .
Causes defects of genes on chromosome 3 and 18. Seckel syndrome , or microcephalic primordial dwarfism (also known as bird-headed dwarfism , Harper's syndrome , Virchow–Seckel dwarfism and bird-headed dwarf of Seckel [ 1 ] ) is an extremely rare congenital nanosomic disorder.