June 28, 2021

Let's Talk Color!

Genetics can be complicated, partially because geneticist are still looking to locate and isolate specific traits we know exist, but cannot test for (i.e.graying/fading/irish spotting).

*I will touch on Fade at a future date.

                                   Genetics, is one of my favorite parts of (behind the scene) my breeding program. I can easily forget to switch

 

from thinking bb (Tyrosinase Related Protein 1 (TYRP1)) to brown. Then Brown is the correct terminology, BUT many breeds(ers) 

 

and families use the term Chocolate, and if you have an Aussie (AussieDoodle) this will be referenced as Red. Brown/Chocolate/Red are

 

ALL visually the same pigment its read as: Gene/Tyrosinase Related Protein 1 (TYRP1) with is the pigment of black or brown on the B

 

locus. I find preferences in speaking in both Locus & correct terminology, but will also use breed/breeder/terminology.

 

               

                

Let's back up...and start simpler:

BASICS OF COLOR TRAITS IN BERNEDOODLES:

K LOCUS DOMINANT BLACK //  Gene: Canine Beta-Defensin 103 (CBD103) // Coat Modifier

The K Locus pattern visibility(hidden pattern) 

 

Tied to the A Locus 

 

A LOCUS AGOUTI //Gene: Agouti Signalling Protein (ASIP) // Coat Modifier

The A Locus = pattern

Determinations Tied to K Locus & E Locus

 

B LOCUS BROWN // Gene: (Tyrosinase Related Protein 1 (TYRP1) // BASE COAT COLOR

 

The B Locus: Pigmentation

Determinations Tied to E Locus & M Locus;

 

*AND The untestable "fade; with linkage to I Locus

 

E LOCUS EXTENSION // Gene: Melanocortin Receptor 1 (MC1R) // BASE COAT COLOR

                                                                                             // Coat Modifier

The E Locus: Extension determining capability of pigmentation.

 

Where eumelanin/phaeomelanin are produced.

Determination Tied to K,A,B,M,I

 

S LOCUS WHITE SPOTTING// Gene: MITF // Coat Modifier

The S Locus: Determinate to most white marking

 

 

 

   Let's Talk Color!

Bernedoodle Basics & The Power of Recessive RED "ee"

June 29, 2021

K LOCUS

KB (DOM) = No Pattern Expressed from A Locus

or SOLID

Kbr (DOM) = Brindle 

KY = Pattern Expressed from A Locus

Dominance descending

 

Ay = Sable

aw = Agouti

at = Tan points

a = Recessive Black

Dominance descending

B = Black Pigment

b = Brown Pigment

E LOCUS

Dominance descending

Em = Masked

E = Normal Extension

EgEhEg = Grizzle

ee = recessive red

A LOCUS

B LOCUS

S LOCUS

There is not One, but Two...

S = no white or minimal

sp = "parti"

si = Irish Spotting

One from DAD

One from MOM

ILOVELUCY.JPG

ky

     kyky


            ky

at

     ata


            a

< This Dog would be patterned according in accordance to A locus

 Since She > is kyky she can show pattern assigned to A locus-- ata would be tan point carrying for recessive black

B

     B
b

            b

< She has Black (B) pigment and carry for brown (b). Her nose is black.

e

     ee


            e

Sketched Arrow
Sketched Arrow

We cannot test for Irish Spotting sisi. However, she is visibly Irish Spotted, Not to be confused with Psuedo. 

si

    sisi


            si

 ^^So genetically she should be visible tan point (atat or ata). But.... The E locus shows ee, which is recessive red. Recessive red does NOT allow for Tan points to be visible. 

Sketched Arrow

Notes_________________________

- if she was "Ee" or "EE", Miss Bernedoodle would be a Black/Rust/White Traditional Tri.
-Pared with Bb or bb brown pups would be produced.

-Paired with a kyky atat EE would produce 100% tan pointed puppies.
   
---kyky ata would have the potential to have 25% solid           pups "aa" 
      ---Ee paring would produce 75% recessive red
      ---ee pairing 100% recessive red.
     --KbKb paring 0% visible tan points. Kbky 50% visible
     ---Kbrky Brindle Pointed Tan Points.

-
 ALL  "ee" BERNEDOODLES DOGS SHOULD BE TESTED FOR MERLE prior to breeding (whether you plan to breed to Merle or not). "ee" HIDES MERLE

 

kyky

ata

Bb

ee

sisi

GENETIC

COLOR TRAIT



 

Red Tuxedo

**STAR FOR LATER

I LOCUS

LINKAGE

 


TRANSLATION

BERNEDOODLE

TERMINOLOGY

 

NEXT

July 03, 2021
Updated: July 05, 2021

Let's Talk Color!

Bernedoodle Basics & The                Sable "ay" Surprise!

K LOCUS

A LOCUS

KB (DOM) = No Pattern

Expressed from A Locus

or SOLID

Kbr (DOM) = Brindle 

KY = Pattern Expressed from A Locus

Dominance descending

 

Ay = Sable

aw = Agouti

at = Tan points

a = Recessive Black

   The Sable (ay) is introduced into Bernedoodle coat genetics from poodle gene pool.

 

When looking at a puppy, Sable will have darker tips and be lighter towards the roots. As you can see with Teddy, the lightness in his undercoat is shinning through. After being clipped the darkest hairs only tend to continue by their ears. Giving the dramatic dipped in ink appearance.

Pro tip:If you are looking for a Tri or phantom be sure to make sure that puppy is not sable. A sable puppy may appear to less experienced breeders as Tri's,there is no such thing as a "Sable Tri". Sable is dominant to tan point.

Any tan points sable pups are born with will 
disappear quickly.

All sables will "clear", but this is different than the Fade/Graying gene.  However, a sable may both clear and fade. 

IMG_4577.jpg

Teddy: aya

Shaded Sable

Not Tested for RALY but Very POSSIBLE Also has Creeping Tan

Bear: ayat

Shaded Sable Tuxedo (Irish Spotting)

Theo: ay/at

Shaded Sable Tuxedo (Irish Spotting)

plus Saddle/creeping

Shaded Sable Bernedoodle ay genetics

Teddy: aya

Shaded Sable

Look at this adorable Bear! His name is “Yogi” a two year old #standardbernedoodle from ou

Bear: ayat 

Shaded Sable Tuxedo (Irish Spotting)

FC48FEAA-DC85-46E1-8B25-5BB020BF2960.JPG

Theo:ay/at

Shaded Sable Tuxedo (Irish Spotting)

plus Saddle/Creeping

imageedit_1_3916054040.jpg

Teddy: ayat

Shaded Sable

Banjo: ayat

Sable Tuxedo (Irish Spotting)

with Saddle/Creeping Tan

ay/at

Cleared Sable Tuxedo (Irish Spotting) with Saddle

IMG_1127.jpg

Teddy: ayat

Shaded Sable

IMG_3194 3.jpg

Banjo: ayat 

Sable Tuxedo (Irish Spotting)with Saddle/Creeping Tan

FC48FEAA-DC85-46E1-8B25-5BB020BF2960.JPG

ayat

Cleared Sable Tuxedo (Irish Spotting)

with Saddle

Gene: A unit of heredity; a segment of DNA or RNA that is transmitted from one generation to the next, and that carries genetic information such as the sequence of amino acids for a protein.

Locus: A fixed position on a chromosome that may be occupied by one or more genes.

eumelanin/phaeomelanin patterning in dogs

I LOCUS// Gene: 

RALY// Gene: 

TICKING// Gene: 

MERLE// Gene:

         Merle is an extensive and extremely interesting trait to study--and any breeder dipping their toe in the water when breeding Merle, or any breeds with the potential have Merle dogs should know a reasonable enough amount to avoid any possibility of producing deaf and blind offspring.