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Translocation Down syndrome can be de novo; that is, not inherited but occurring at the time of an individual's conception, or may be inherited from a parent with a balanced translocation. The balanced translocation figure shows a 14/21 translocation between the long arms of chromosomes 14 and 21, where the other chromosomes are not shown.
Down syndrome or Down's syndrome, [12] also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. [3] It is usually associated with developmental delays, mild to moderate intellectual disability , and characteristic physical features.
The average IQ of a young adult with Down syndrome is 50, equivalent to the mental age of an 8- or 9-year-old child, but this number varies widely. [3] At the same time, they enjoy a rich social and emotional awareness. [4] Down syndrome is the most common chromosome abnormality in humans, [3] occurring in about one per 1000 babies born each ...
Flying fish do not fly, but are very good at gliding flight. [183] Hummingbird, dragonfly and hummingbird hawk-moth can hover and fly backwards. [184] Neuroglobins are found in vertebrate neurons, (deuterostomes), and are found in the neurons of unrelated protostomes, like photosynthesis acoel and jelly fish. [185]
A peacock spreading his tail, displaying his plumage Peahen. Peafowl is a common name for two bird species of the genus Pavo and one species of the closely related genus Afropavo within the tribe Pavonini of the family Phasianidae (the pheasants and their allies). Male peafowl are referred to as peacocks, and female peafowl are referred to as ...
Male peacocks can get aggressive during mating season and will be more territorial than usual. If you see a peacock in the wild and it appears to be aggressive, don't panic. Don't make any eye ...
A peacock s struts across the street at the Auburn Creek Apartment complex in Lincoln on Dec. 18, 2003. The birds can be spotted on rooftops, in oak trees and on people’s balconies.
[12] [13] A male peafowl or peacock is a larger sized bird with an average bill to tail length of 100–120 cm (40–46 in) and as much as 200–230 cm (78–90 in) to the end of a fully grown train. It weighs 4.1–5.2 kg (9–11.5 lb) and is amongst the heaviest birds in Phasianidae .