Hi! I'm looking to collect data on horse genetics! - The Horse Forum
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post #1 of 6 Old 01-19-2020, 06:34 AM Thread Starter
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Hi! I'm looking to collect data on horse genetics!

Hi! So the short of it is I'd just love it if people who have tested their horses for the A and E alleles (but also any other coat genes are helpful) could post a picture of the horse and the data you got back. Info on family trees is the next best thing! Thank you very much for your help~
The long of it is I like to make genetics games and to research genetics and at the moment my focus has turned to horses. I know a lot at this point on general horse colour genetics but I'm still looking to find answers for sooty, liver, mahogany, and a whole slew of other stuff. I'm hoping if I can get enough data gathered I can work it out for myself and share what I learned.
The project I'm using the data on is called "Genetic Animals" which is a modification of the popular game minecraft. We all have to get our kicks somewhere.
Thanks for any data you might have!
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post #2 of 6 Old 01-19-2020, 12:59 PM
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While the precise genes that cause sooty are not known at this point it is believed to be genetic in origin with more than one gene playing a part as a modifier of coat color. The other two, mahogany and liver, are shade terms and shade can be effected by many things but red is red is red genetically. They are all ee. Bays (which have red bodies with restriction of placement of black to points) are going to be E_A_ and again the shade of the red is not determined be the base genes but by other factors. It is possible there is a genetic component specifically but that has not been determined. We do know mineral deficiencies, (I suspect) toxicities, exposure to weather or sweat and other genes that modify can be a determining factor of shade. So does season. Fade which is genetic (degree of fade) as well as environmental also effects shade.

Some horse people change their horse, they change their tack and discipline, they change their instructor; they never change themselves.

Last edited by QtrBel; 01-19-2020 at 01:42 PM.
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post #3 of 6 Old 01-19-2020, 01:24 PM
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Pictures - the first left is EeAa and right is eeAa with nd1. Second pic is a full brother to right and half to left. eeAa and has sooty. Third is sire to those two Palominos and is eeAa with sooty (very obvious). 4th is Eeaa with nd1 and cream. 5th is EeAa no sooty, no nd1. 6th is EeAA 7th is EeAa with sooty. 8th EeAa no sooty, no nd1.
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Some horse people change their horse, they change their tack and discipline, they change their instructor; they never change themselves.

Last edited by QtrBel; 01-21-2020 at 12:40 PM.
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post #4 of 6 Old 01-19-2020, 01:30 PM
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I had pulled several photos but then removed as I would first like to know what data you are collecting. Is it the colors you think go with the genes or the photos themselves as examples which I am not willing to give permission for.

Some horse people change their horse, they change their tack and discipline, they change their instructor; they never change themselves.
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post #5 of 6 Old 01-21-2020, 12:15 AM Thread Starter
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Hi QtrBel! Don't worry I have no interest or means of using photos elsewhere, I only wish to look. The data I'm collecting is really just summed up as "what is the range of possible colour with this set of genes". Its just a hobby, or more like an obsession to learn all I can about genetics. By sharing I'm meaning that I'll post here on this forum with any correlations that I've found and hope it is helpful to the people that have helped me, and other users of this site.
I hope this sets your mind at ease. :)
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post #6 of 6 Old 01-21-2020, 08:48 AM
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One of the first things to understand is that the extension gene and the agouti gene work in tandem. Any horse with an E will have the capability of producing black. If paired with an A it will also be capable of producing red which means some form of bay depending on other modifiers. So E_A_ will be Bay. E_aa will be black and ee with any A or a combination will be red.



I'll put the photos back so you can see the range possible. I think you will just need to pick standard shades to match your gene combos and there are plenty of charts you can google for reference.


Feel free to ask questions there are several here that are happy to discuss color.

Some horse people change their horse, they change their tack and discipline, they change their instructor; they never change themselves.
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