What does N/N mean? - Page 2
   

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What does N/N mean?

This is a discussion on What does N/N mean? within the Horse Colors and Genetics forums, part of the Horse Breeds, Breeding, and Genetics category
  • What does it mean when a horse is n/n
  • "n" means in genetics

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    06-27-2012, 12:45 PM
  #11
Trained
All N in N/N or H/N or what ever is that there is no mutation present. You can get it for anything from HyPP to anthing a horse may have. Anything that can be tested for through DNA if the mutation is not present it is represented by an N.
     
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    06-27-2012, 02:22 PM
  #12
Trained
Arabian horses tested for CA (cerebellar abiotrophy) come back N/N, N/CA or CA/CA. N/N is what you reallllllly want.
     
    06-27-2012, 04:01 PM
  #13
Trained
N/N just means the horse is completely negative for a gene. N/another letter means it carries one gene (heterozygous) and Letter/Letter means the horse carries two copies of a gene (homozygous).

Also important when breeding breeds that carry Frame Overo, as breeding two N/O horses leaves a 25% of O/O, which is fatal.
eclipseranch likes this.
     
    06-27-2012, 05:46 PM
  #14
Foal
So basically N/N means that whichever disease there is is not present in that horse's genes?
     
    06-27-2012, 08:23 PM
  #15
Trained
Not diseases only, just a gene. The diseases that have been mentioned are all genetic diseases.
     
    06-27-2012, 09:46 PM
  #16
Weanling
[QUOTE=Poseidon;1569766]Not diseases only, just a gene. The diseases that have been mentioned are all genetic diseases.[/QUOTEyes the same goes for australian shepherds 2 merles should not be bred because of the possibility of a lethal white...principle can cross all genetics...in horses or any other species one individual can be free of a gene altogether, be a carrier that can pass on to their offspring but not exhibit the trait themselves or have the trait themselves and pass it on to offspring]
     
    06-28-2012, 03:07 AM
  #17
Foal
Quote:
Originally Posted by Poseidon    
Not diseases only, just a gene. The diseases that have been mentioned are all genetic diseases.
Okay thanks. :)
     

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n/n, pedigree

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