Adorable foal with a somatic mutation. Basically the gene responsible for brown color in that hair was switched off in that area and resulted in black hair. Somatic mutations are not inherited traits.

Adorable foal with a somatic mutation. Basically the gene responsible for brown color in that hair was switched off in that area and resulted in black hair. Somatic mutations are not inherited traits.

This is a mare whose odd white streaks are probably the result of a somatic mutation. Somatic mutations are the result of a gene that is accidentally switched "off," often resulting in odd patches of color on an otherwise ordinary coat.

This is a mare whose odd white streaks are probably the result of a somatic mutation. Somatic mutations are the result of a gene that is accidentally switched "off," often resulting in odd patches of color on an otherwise ordinary coat.

This Trakehner colt, Holme Park Van Gogh, was an excellent example of a somatic mutation. The black patch on his otherwise bay coat was the result of the agouti gene misfiring leaving that section of his coat an undiluted black.

This Trakehner colt, Holme Park Van Gogh, was an excellent example of a somatic mutation. The black patch on his otherwise bay coat was the result of the agouti gene misfiring leaving that section of his coat an undiluted black.

This is a mare whose odd white streaks are probably the result of a somatic mutation. Somatic mutations are the result of a gene that is accidentally switched "off," often resulting in odd patches of color on an otherwise ordinary coat.

This is a mare whose odd white streaks are probably the result of a somatic mutation. Somatic mutations are the result of a gene that is accidentally switched "off," often resulting in odd patches of color on an otherwise ordinary coat.

This is a girl who used to show in my area's mare... everyone always just called it a birthmark, but is it really chimera?

This is a girl who used to show in my area's mare... everyone always just called it a birthmark, but is it really chimera?

Somatic Mutations: Somatic mutations are the result of a gene that is accidentally switched “off,” often resulting in odd patches of color on an otherwise ordinary coat.

Somatic Mutations: Somatic mutations are the result of a gene that is accidentally switched “off,” often resulting in odd patches of color on an otherwise ordinary coat.

This is actually my uncles horse, I've always wondered about his unique coloring!!!! Raised him since he was a baby!

This is actually my uncles horse, I've always wondered about his unique coloring!!!! Raised him since he was a baby!

This is stunning DA Remote Control, a half Arabian mare whose and white streaks are probably the result of a somatic mutation!

This is stunning DA Remote Control, a half Arabian mare whose and white streaks are probably the result of a somatic mutation!

Vida Loca, a 2002 Dutch warmblood mare exhibiting a somatic mutation. Her other side doesn't have the white marks.

Vida Loca, a 2002 Dutch warmblood mare exhibiting a somatic mutation. Her other side doesn't have the white marks.

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