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True Blue Roan would be aaE-Rn-

A gray overo horse with an unknown coat color ----G-Ov (ang assuming that coverao is supposed to be overo and not tobero).

50% chance of the Roan allele passing on to the foal,

50% chance of the gray allele passing on to the foal.

50% chance of the overo allele passing on to the foal.

The blue roan parent will pass the black allele on at the agouti site but since the base color genetics of the gray parent is unknown a determination of which

alleles for chestnut, black bay etc will be passed is a complete guess without

information on the foal's grandparents and even great grand parents on the gray horse's side.

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13y ago

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