• About This Guide
  
• How This Guide is Being Developed
  
• Philosophy of this guide
  
• Using this Guide
  
• Thinking Scientifically
  
• About the Author
  
• Documented Genes
  
• What is a documented gene?
  
• Black/Red (MC1R)
  
• Bay (ASIP)
  
• Cream/Pearl (SLC45A2)
  
• Dun (TBX3)
  
• Gray (STX17)
  
• Silver (PMEL17)
  
• Champagne (SLC36A1)
  
• Roan/Tobiano/Sabino/White Spotting (KIT)
  
• Splash White (MITF/PAX3)
  
• Leopard Complex (TRPM1/ECA3P)
  
• Frame (EDNRB)
  
• Tiger Eye (SLC24A5)
  
• Height Regulation (HMGA2/LCORL)
  
• Mushroom (MFSD12)
  
• Hypothetical Genes
  
• What is a hypothetical gene?
  
• Borrowed Genes
  
• Glossaries
  
• Glossary of Colors
  
• Glossary of Terms
  

How This Guide is Being Developed

• Last updated: 2026-01-14

  
  

  This guide is in the process of being written, and I expect it to take at least all of 2026 to get the core parts of it finished. I expect it to always be evolving as more information is published. I apologize in advance if you run into unfinished sections. If you have an area you would like me to focus on finishing, or want me to expand on, please let me know.

  Here are my current progress goals:

  1. Complete the overview of all documented genes.
  2. Complete the overview of all hypothetical and fantasy genes.
  3. Complete the overview of non standard expression
  4. Complete the Glossary of Colors
  5. Complete the overview of genetic disorders
  6. Write up in-depth information about the functioning of documented gene
  
  

  I am also looking to expand the Glossary of Terms as I find new ones that need to be added. The in-depth knowledge write ups will probably also be done throughout the process as the mood strikes me. These will be the most complex and intense parts of the guide so spacing them out will help prevent burn out.