They also have no concept of epigenetics, which means, above genetics. This is an area of study where factors outside off genetic coding causes changes to occur and those changes can be inherited. These factors, are called stressors, they can be environmental or chemical. not much is known about this, at this time. On the surface, epigenetics is a small link to Lamarckian evolution. Its very interesting and does explain some problems that surface.
For instance, if a pure recessive is line bred for many generation, sooner or later, other visual traits occur.
Such areas like color and pattern are good areas to see this occur, as its necessary for animals to adapt quickly to changing conditions. So these areas may indeed be "easy" genes to fold and cause changes outside of genetic coding. other areas such as heart/lungs etc, are very strong genetic coding that are not easily stressed. Or easily changed.
Even behavior is linked in this way. Examples could be, all this captive morphs, are wiped out quickly in nature, if theey do not fit, they are GONE. This occurs with behavior, a slight behavioral variation, is normally erased quickly, but genetically stored. As the environment is constantly changing, those morphs and behavioral flaws may be needed at some time. and needed quickly.

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