Royal Blue

Maine Coon · DBE-RE · line: Rociri Elvis · both eyes blue · Genotyped · also in its ancestry: Pillowtalk-Foreigner

Under the variant field this directory proposes, this cat would read DBE 164t. A laboratory result on this animal. The proposal is set out in full here, and no registry issues this field today: it is computed from the record at each build and is not part of any registration.

How this cat is connected to the trait

A laboratory has tested this animal itself, so nothing has to be traced: the result is on the cat.

Save this cat as a PDF the connection, the genealogy and the source on one A4 landscape sheet, carrying this directory's name and address

What is flagged on this tree

1. ROCIRI ELVIS, GIVEN ON THE PEDIGREE AS ROCIRI'S ELVIS. HIS OWN SHEET, AND WHAT IS AND IS NOT ON IT. THIRTY ANCESTORS, ALL THIRTY UNIQUE, FOUR COMPLETE GENERATIONS, INBREEDING 0.0 PER CENT. THE 68 ON HIM IS THE ONLY 68 ON THE WHOLE DOCUMENT AND THE ONLY EYE CODE OF ANY KIND ON IT IS THE 63 ON JUSTCOONS HA SHISCH, MCO w 63, A DOMINANT WHITE ODD-EYED CAT IN THE THIRD GENERATION. His grandsire Mainefield's Oye Como Va is MCO w, also white, and carries no eye code. NO OTHER ANIMAL ON THE SHEET CARRIES AN EYE CODE AT ALL. THAT IS THE WHOLE OF THE EVIDENCE ABOVE HIM: two white cats, one of them odd-eyed, and twenty-eight animals with nothing recorded about their eyes. In a white cat an eye cannot be read either way, so the sheet neither supplies a source for his 68 nor rules one out, WHICH IS WHY THE PUBLISHED TRACE ABOVE HIM RUNS THROUGH WHITE CATS AND GOES COLD THERE
2. JOYFIELD'S SURVIVOR VAN NOUS DEUX. Panel. The result that named this cat's variant came from a panel of four: DBE-ALT, DBE-RE, DBE-CEL and DBE-AGO. DBE-cDc AND DBE-xHW WERE NOT ON IT, so a second variant from those two would not have been seen
3. BELLEAYR O'BLUE PEARL. THE STRONGEST EVIDENCE IN THIS REGISTER THAT 68 AND 69 ARE ONE VARIANT, AND IT RESTS ON A GENOTYPE AND NOT ON AN INFERENCE. THREE FULL SISTERS, ONE MATING, 14 SEPTEMBER 2022, out of Joyfield's Survivor van Nous Deux, MCO es 03 68, and Justcoons Ohio State, MCO ds 22. ALL THREE ARE GENOTYPED DBE-RE. THE REGISTRIES CODED THEM THREE DIFFERENT WAYS: BELLEAYR O'BLUE SKY IS MCO ds 11 68, BELLEAYR O'BLUE SEA IS MCO ds 09 11 WITH NO EYE CODE AT ALL, AND BELLEAYR O'BLUE PEARL IS MCO ds 09 11 69. Two of the three are blue-eyed and one is odd-eyed. ONE ALLELE, CONFIRMED BY TEST ON EACH ANIMAL SEPARATELY, PRODUCED A 68, A 69 AND A BLANK IN ONE LITTER. THE ARST VENEZIA DESCENT AND THE ERMINE TRACE SHEETS REACH THE SAME CONCLUSION BY READING CODES DOWN A PEDIGREE; THIS LITTER REACHES IT FROM THE LABORATORY. It is therefore the primary evidence in this register on the question and those are the corroboration. IT ALSO SHOWS THAT AN ABSENT EYE CODE IS NOT AN ABSENT VARIANT: O'Blue Sea is blue-eyed, genotyped, and carries no eye code, so EVERY COUNT IN THIS REGISTER DRAWN FROM EYE CODES UNDERSTATES | A GENOTYPED CAT THAT IS ODD-EYED AND CARRIES WHITE SPOTTING, AND WHAT THAT SETTLES. She is genotyped DBE-RE, her registry code is MCO ds 09 11 69, and her eye is odd. THREE THINGS FOLLOW FROM A LABORATORY RESULT RATHER THAN FROM AN INFERENCE. FIRST, A DOMINANT BLUE EYE VARIANT CAN PRESENT AS AN ODD EYE: 69 is not a separate variant from 68 in her case, it is the same allele showing on one side. SECOND, IT CAN DO SO ON A CAT CARRYING WHITE SPOTTING: the 09 on her code does NOT mean her odd eye is the white spotting odd eye, and the presence of white on a cat therefore does not by itself dispose of an odd eye. THIRD, THE ROCIRI'S ELVIS LINE CARRIES DBE-RE ON A GENOTYPE: Rociri's Elvis, MCO e 09 68, stands in her fourth generation through Joyfield's Dolly, MCO g 09 68, and her sire Joyfield's Survivor van Nous Deux, MCO es 03 68, is genotyped DBE-RE as well. THE LINE IS ANCHORED BY TEST AND NOT BY CODE-READING | WHAT THIS DOES AND DOES NOT DO TO THE WHITE SPOTTING RULE. The rule this register works to is that an odd eye on a white-spotted cat has an ordinary cause, because the white covers an eye where it falls, and that a bicolour with TWO blue eyes does not. THAT RULE STANDS: it is a rule about what an odd eye on a bicolour is EVIDENCE OF, not about what such a cat can CARRY. BelleAyr O'Blue Pearl shows the difference. She is odd-eyed, she carries white, AND SHE IS GENOTYPED FOR THE VARIANT, so in her case the odd eye is the variant. WITHOUT THE TEST HER APPEARANCE WOULD HAVE BEEN READ THE OTHER WAY. THE RULE IS THEREFORE A RULE FOR READING UNTESTED CATS AND IT IS NOT A RULE ABOUT WHAT IS THERE. Where a genotype exists it governs and the coat is not consulted
4. ROYAL BLUE. Sire. IDENTIFIED BY THE BREEDER, NOT BY A DOCUMENT SEEN BY THIS SURVEY. The litter record names the stud only as Adam. T. The register held the link open until then because a first name alone is not a matchhe breeder's confirmation to this survey, 17 August 2026, that the stud recorded on the litter records only as Adam is Tri-D Adam | Panel. The result that named this cat's variant came from a panel of four: DBE-ALT, DBE-RE, DBE-CEL and DBE-AGO. DBE-cDc AND DBE-xHW WERE NOT ON IT, so a second variant from those two would not have been seen

A flag is not an error. It marks a place where two sources say different things, or where an attribution cannot be made on the evidence held.

The record

Register id

mco-33

Sex

male

Breed, as stated

Maine Coon

Line

Rociri Elvis

Variant

DBE-RE

Eye status

blue: both eyes blue

Eyes, in the source's words

blue

Role

offspring

Relations named by the source

Tri-D Adam x BelleAyr O'Blue Pearl; littermate of Marjaan, Gimli and Renzo Royal Legolas

Litter key

belleayr-2024-06-01

Country

United Kingdom

Year

1 June 2024

EMS code

MCO es 11

The code read out

Maine Coon; cream silver; shaded

The description held

no coat, no EMS code and no eye code supplied. Genotyped in the published cohort

Note

The code and the description do not use the same words for this coat. Both are recorded and neither is reconciled to the other.

Evidence grade

DNA genotyped a laboratory result exists for this animal

In the register

• Parents: Tri-D Adam, BelleAyr O'Blue Pearl
• Littermates (belleayr-2024-06-01): Renzo Royal Legolas, called Renzo on the breeder's litter record, Marjaan, Gimli

This directory is a working aid compiled from published charts, registry documents and breeder statements. It is not a register and it has no standing of any kind. The grade attaches to the animal, not to the line: a cat whose ancestor was genotyped is line-traced, not genotyped.