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An autosome is any chromosome that is not a sex chromosome. [1] The members of an autosome pair in a diploid cell have the same morphology , unlike those in allosomal ( sex chromosome ) pairs, which may have different structures.
There is one experimentally documented case of sex chromosome turnover occurring during a 30-year evolutionary experiment involving teleost fish (specifically the swordtails), in which hybridization experiments resulted in a translocation of the sex-determiner region of a sex chromosome into an autosome. This resulted in the autosome becoming a ...
In the case of the chicken, their Z chromosome is more similar to humans' autosome 9. [26] The chicken's Z chromosome also seems to be related to the X chromosome of the platypus. [ 27 ] When a ZW species, such as the Komodo dragon , reproduces parthenogenetically , usually only males are produced.
Sex chromosome anomalies belong to a group of genetic conditions that are caused or affected by the loss, damage or addition of one or both sex chromosomes (also called gonosomes).
The ZW sex-determination system is a chromosomal system that determines the sex of offspring in birds, some fish and crustaceans such as the giant river prawn, some insects (including butterflies and moths), the schistosome family of flatworms, and some reptiles, e.g. majority of snakes, lacertid lizards and monitors, including Komodo dragons.
Detail of a human metaphase spread. A region in the pseudoautosomal region of the short arms of the X chromosome (left) and the Y chromosome (top right) was detected by fluorescent in situ hybridization (green).
48,XXYY syndrome is a condition related to the X and Y chromosomes (the sex chromosomes). People normally have 46 chromosomes in each cell.Two of the 46 chromosomes, known as X and Y, are called sex chromosomes because they help determine whether a person will develop male or female sex characteristics.
An autosome is an ordinary paired chromosome that is the same in all genders of a species. Shouldn't that be sexes rather than genders? --Brion 00:45 Sep 27, 2002 (UTC) An autosomal dominant gene is one on an autosome and is always expressed, even if a single copy exists. The chance is 1:2 for passing this gene to offspring.