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Showing posts with the label color genetics

The E Locus: Hands Up Baby!

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This post is Lesson 6 in our   Rabbit Genetics Illustrated   series.  Extend your hands up into the air like you just don't care!  We're almost done.  The genes on this Locus affect how far along each hair, pigment will be extended.  The E Locus is home to 5 genes. In order of dominance from most to least they are:  • Dominant Black noted as Ed • Steel noted as Es • Full Extension noted as E • Japanese noted as ej • Non-Extension noted as e The simplest of them all and one which you are most likely to routinely see is the Full Extension gene. It essentially does nothing to change or influence any of the other colour genes that are already at play. It allows all the other genes to do their thing just as they want to. All of our previous example rabbits have been Full Extension. All of the other genes on the E Locus have some sort of an effect and override what ever it is that the genes on the previous Loci would like to be doing.   The Dominant Black gene is fairly rare and is n

The C Locus: The Department of Pigment Taxation

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This post is Lesson 5 in our   Rabbit Genetics Illustrated   series.  The C Locus is home of the Pigment Taxation Department. The letters you see in this portion of our recipe will tell you if your rabbit gets to keep all of their pigments, if your rabbit has to give up some of their pigments and which ones, or if your rabbit does not get to show off any pigment at all and will be a red eyed albino. There are 5 genes that you can encounter here. Let's start with the two extreme opposites as those are the easiest. First up is the big letter "C". This is the most dominant gene on this Locus and the kindest member of this department. The big "C" stands for full colour. Nothing is taxed, no pigments are reduced or taken away, the rabbit gets to keep all of their colour. All of our example rabbits from previous lessons were "C" or full colour rabbits. Because "C" is the most dominant gene here, a single copy is all it takes for the rabbit to be ab

The A Locus: Wild, Tanned, and Selfish

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This post is Lesson 4 in our   Rabbit Genetics Illustrated   series.  Wild, tanned, and selfish could easily describe a good number of people. At this time, you can picture who ever you would like who fits that description if that's what it will take for you to remember what lurks here. However we are talking about rabbits. The A Locus is home to not two but three possible coat patterns. They are Agouti (some times referred to as the wild rabbit coat), Tan, and Self.  Let's start with the Self rabbits since that is what we have been using in all of our examples so far. A Self rabbit is covered from the tip of it's ears to the tip of it's toes in one single solid colour. It can be any of our four primary colours: Black, Blue, Chocolate, or Lilac. There should be no spots, no shading, no pattern of any sort imposed over this colour. All you see is that colour.  The Tan gene is responsible for giving us the iconic look of the Otter pattern.  The Tan gene spices up the plai

The D Locus: How do you like your Vodka?

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This post is Lesson 3 in our   Rabbit Genetics Illustrated   series.  The D Locus has only one question on it's mind. How do you like your Vodka? Do you drink it straight, or do you mix it with water? That's because this D stands for Dilution.  The D Locus is home of the Dilution gene. It dictates if you are going to get your rabbit colour straight up at full strength, or if you are going to get a diluted version.  As we learned in the previous lesson, all rabbits can be described as being either Black based or Chocolate based. The Dilution gene transforms those two options into four. The Dilution gene changes Black based rabbits into Blue based rabbits, and Chocolate based rabbits into Lilac based rabbits. This interaction between these two genes gives us what you can think of as the four primary colours that all rabbit colours are based on and often named after. They are Black, Blue, Chocolate, and Lilac.  Both Blue and Lilac appear as different shades of grey. They can at ti

The B Locus: It's Black or Brown

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This post is Lesson 2 in our Rabbit Genetics Illustrated series.  Rabbit colours work similarly to the way your printer can print many different colours by mixing the ink from only four ink cartridges (Black, Cyan, Yellow, and Magenta).  Different genes control how colour pigments are expressed, diluted, dispersed within each individual hair or the entire coat, or if they are expressed at all, and that is what gives us the many different colours and patterns. However at the end of the day, all rabbits out there, regardless of what they actually look like, are based in either Black or Brown.  Black or Brown is noted on the "B" portion of our recipe. Each block of letters is called a Locus, and hence we refer to this position as the B Locus. Black is noted with a capital "B" while Brown is noted with a lower case "b". In rabbits, we commonly refer to Brown as Chocolate. Now that you understand that the little "b" stands for Brown, moving forward w

The Basics of Rabbit Colour Genetics

This post is Lesson 1 in our  Rabbit Genetics Illustrated  series.  The recipe for a rabbit's colour is marked by a string of letters, each representing a specific ingredient. The letters will always range alphabetically and in pairs from A to E. That is the standard recipe.  AA BB CC DD EE Every rabbit inherits half of each pair from their mom and half of each pair from their dad. In the example above, the rabbit received A B C D E from mom and they received A B C D E from their dad. On occasion, you may see additional letters added after the last position of EE. Those generally represent additional patterns or qualities which are involved. They are noted if they are important to note for that rabbit, but in general are omitted if they do not apply. More on those later. The first 5 spots from AA to EE are never omitted, though they may be marked as blank if they are unknown.  In some cases, you may not be able to identify one or more of the ingredients in a rabbit's recipe. Wh