Color Calculator Questions
   

       The Horse Forum > Horse Breeds, Breeding, and Genetics > Horse Breeding

Color Calculator Questions

This is a discussion on Color Calculator Questions within the Horse Breeding forums, part of the Horse Breeds, Breeding, and Genetics category
  • Horse colour genetics calculator
  • Colour horse calculator

 
LinkBack Thread Tools
    05-24-2012, 08:24 PM
  #1
Started
Color Calculator Questions

I was wondering.....if I wanted to breed to a red roan, what kinds of genes are in there when doing the calculator besides red and black. Others can use this too for their own questions. :)

I know roan is 50/50 chance.
Posted via Mobile Device
     
Sponsored Links
Advertisement
 
    05-24-2012, 09:12 PM
  #2
Trained
Well the red can either be carrying agouti in it's homozygous or heterozygous forms or not at all...
     
    05-24-2012, 10:59 PM
  #3
Trained
If he's red, chestnut, then he's homozygous for red. He may also carry the agouti gene and be homozygous for that but it doesn't show on chestnuts. You can pull tail hair and send it in for testing and they can tell you whether he carries the agouti gene or not.
     
    05-24-2012, 11:05 PM
  #4
Showing
Actually, the probability of roan also depends on the horse's zygosity.

He is a chestnut, so he is homozygous for red, no chance of a black based foal from his side of the genes.

Roan:
Homozygous = 100% chance of roan foal
Heterozygous = 50% chance of roan foal

Agouti:
Homozygous = 100% chance of a foal carrying agouti
Heterozygous = 50% chance of a foal carrying agouti

Agouti will not show on a red based horse so the only way you could guarantee a foal that exhibited agouti would be to breed a mare that was homozygous for a black base coat (bay, brown, buckskin, smoky black, grullo, bay dun, etc).
     

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help with color questions!! Army wife Horse Colors and Genetics 32 05-01-2012 04:20 AM
Foal Coat color Calculator Beta Testing alforddm Horse Colors and Genetics 6 07-28-2011 12:58 PM
Coat color calculator that includes brown LuvMyPerlinoQH Horse Colors and Genetics 0 06-23-2011 12:17 PM
Color calculator Crossover Horse Colors and Genetics 6 11-12-2010 02:46 PM
Color Calculator....? SAsamone Horse Breeding 9 11-11-2009 09:29 PM



All times are GMT -4. The time now is 08:23 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0