genetics question - The Horse Forum
 
LinkBack Thread Tools
post #1 of 5 Old 03-27-2013, 10:12 AM Thread Starter
Foal
 
Join Date: Oct 2012
Posts: 8
• Horses: 0
genetics question

I have a buckskin paint stud and a bay paint mare. Neither are homozygous because the mare just gave birth to a solid buckskin colt. My question is, even though the colt is solid, because both his parents are painted, does that mean he will throw only painted babies when he's older even though he is solid? Or will I need a dna test to be certain?
Posted via Mobile Device
rallen9491 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 03-27-2013, 11:25 AM
Yearling
 
Join Date: Jan 2010
Location: Stroudsburg, Pa
Posts: 984
• Horses: 4
That depends on what patterns the sire and dam carry. They could carry any combination of them. If they both carry tobiano there is a possibility he is a minimal tobiano, but highly unlikely. I would also advise testing all of them for OLWS, or Frame Overo, even if they look like just tobianos or are solid.
kassierae is offline  
post #3 of 5 Old 03-27-2013, 11:55 AM
Weanling
 
Join Date: Oct 2008
Location: BC, Canada
Posts: 618
• Horses: 1
All of the pinto markings are dominant, meaning, if they are present in hetero or homozygous form, they will show (however minimally). As evidenced by some of the horses on here, they can show in as little form as a star on the forehead, or even some tiny dot on the underside of the horse that you'll never see. If sire and dam are both heterozygous for each or any pinto gene, there is a 25% chance that there each offspring will be born without that particular gene. IE, tobiano

If sire and dam are each heterozygous for tobiano, they have a 25% chance of producing a homozygous tobiano foal (TT), 50% of heterozygous (Tt) and 25% of non-tobiano (tt).

*edit, Punnett squares are hard to reproduce on here!*

This is true for each type of pinto gene they carry seperately, and each gene is not dependant on or connected to the others. If your resulting foal ended up tt (or recessive for any of the other pinto genes), he will not produce pinto foals unless bred to a pinto mare. If he is heterozygous (Tt) he will have the same possibilities as his sire, if homozygous (TT) he will always produce pinto. The only way to know for sure since your horse does not APPEAR to be pinto (based on markings) is to have the genetic tests done to see if he's a minimally expressed pinto.
kenda is offline  
post #4 of 5 Old 03-27-2013, 03:57 PM
Started
 
Join Date: Nov 2012
Location: Canada
Posts: 1,942
• Horses: 2
It's tough to say. Colour genetics can be mysterious. I can offer an example, but it's not quite the same. My mare's sire was a Paint and was heterozygous. Dam was solid. The resulting foal also ended up being solid. I had her tested a few months back and she carries absolutely zero of the testable Paint colour markers (results are below.) I think there is small chance that the foal might not carry any markers, however, I'm not positive. I know my example is a little different because one mare was already solid.

Something that might make it a bit easier is to go on the Coat Color Calculator and you can see the possible colour genetic combinations.

LETHAL WHITE


OVERO
N/N No evidence for the altered sequence detected.
SABINO 1


N/N No evidence of altered sequence detected.
TOBIANO


N/N No evidence of altered sequence detected. Horse is not Tobiano.
WHITE SW-1 N/N No copies of SW-1 mutation.
SPLASHED
WHITE SW-2


N/N No copies of SW-2 mutation.
SPLASHED
WHITE SW-3


N/N No copies of SW-3 mutation.

Glynnis is offline  
post #5 of 5 Old 04-23-2013, 11:27 AM
Weanling
 
Join Date: Feb 2013
Location: Texas
Posts: 316
• Horses: 2
I back Kenda, pinto is dominant, so if he carried the gene, it would be visible on his coat (albeit, small and hard to find could still be visible). The colt is most likely not a carrier for either gene, so while a DNA test could prove he does carry the gene (presented as a white marking on some obscure area of his body) it is highly unlikely, especially if you know both sire and dam are heterozygous.
Southern Grace is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the The Horse Forum forums, you must first register.

Already have a Horse Forum account?
Members are allowed only one account per person at the Horse Forum, so if you've made an account here in the past you'll need to continue using that account. Please do not create a new account or you may lose access to the Horse Forum. If you need help recovering your existing account, please Contact Us. We'll be glad to help!

New to the Horse Forum?
Please choose a username you will be satisfied with using for the duration of your membership at the Horse Forum. We do not change members' usernames upon request because that would make it difficult for everyone to keep track of who is who on the forum. For that reason, please do not incorporate your horse's name into your username so that you are not stuck with a username related to a horse you may no longer have some day, or use any other username you may no longer identify with or care for in the future.



User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Color and Genetics Question AnnaLover Horse Breeding 10 06-13-2010 09:31 PM
Question about color genetics?? close2prfct Horse Breeding 51 03-17-2009 07:37 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome