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It has been suggested that this article or section be merged with Homosexuality. (Discuss)

Immutability is the inability of a thing to be changed. For example, it is impossible to change a dog into a cat. Likewise, it is impossible to change one's race, although with makeup or plastic surgery has made it possible to alter one's racial appearance. The immutability of membership in a group is an important consideration in determining the level of scrutiny given to a law against that group under the Equal Protection Clause.


Gender and homosexuality

There is some debate over whether a "sex-change" operation is valid as regards whether one's sex is immutable or not.

There has been much debate over whether homosexuality is immutable. Often the argument is made that it's either genetically determined (and thus immutable), or that it is entirely a matter of choice. Given this dichotomy, the premise that "I didn't choose to be gay" yields the conclusion that it must be genetically determined. However, the search for a "gay gene" has proved elusive. Many others, including most scientists, have a much less 'black and white' view. They propose that it is determined by a complex interaction of many factors, some of which could be genetic, but probably also include psychological, environmental and cognitive factors, and is shaped at a very early age.

Simon LeVay wrote: "It's important to stress what I didn't find. I did not prove that homosexuality is genetic, or find a genetic cause for being gay. I didn't show that gay men are born that way, the most common mistake people make in interpreting my work. Nor did I locate a gay center in the brain. ... Since I look at adult brains, we don't know if the differences I found were there at birth or if they appeared later."[1]


Before 1960, the brain was considered by scientists to be immutable, subject only to genetic control.[2]
For decades, the prevailing dogma in neuroscience was that the adult human brain is essentially immutable, hardwired, fixed in form and function, so that by the time we reach adulthood we are pretty much stuck with what we have.[3]


  1. Byrd, A. Dean, Shirley E. Cox, and Jeffrey W. Robinson (May 27, 2001), Homosexuality: The Innate-Immutability Argument Finds No Basis in Science. Salt Lake Tribune
  2. Response of the Brain to Enrichment - Marian Cleeves Diamond, Johns Hopkins School of Education
  3. Time magazine

See also

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