BYC Genetic/Breed Calculator Huge Task Ahead!

[Amer]

it looks to me like there are 3 layers to egg colors. base color, outer shell color and then the bloom has it's own color.

white eggs are an absence of color in all 3 layers. Brown seems to only be added at the second and third layers, BUT I would guess that Marans eggs are so dark because the brown is added on the first layer. Blue is added at the first second and third layer.

green is when blue is combined with brown.

Brown and white are co-dominant. :/ which means that a cross with a white layer and a brown layer will make for a lighter brown color egg. but with gender dominance....

if you cross a white layer roo over a brown layer hen the resulting shell color of the offspring will be darker, than
a brown layer roo, over a white layer hen.

Assuming genetically the two parent birds for each the white shell, and brown shell were identical and the only difference was the gender.

Make sense?

I'll have to do more research but that's what I've come up with so far. The Marans coloration was just my own guesswork, I'll have to actually look that up.

Marans eggs still have the white base layer. But the bloom can be thicker at times.

 

[Kiki]

All eggs start off white.

 

[BlackHackle]

Be sure to research the places/websites you are using to research now.


Remember not everything you read on the internet is true/fact.

Yup...well I got the yellow feet part figured out on my own

 

[Kiki]

Egg info.
https://academic.oup.com/ps/article/94/10/2566/2077496#31934128

 

[LilJoe]

ooo wanna help? do you have any reference websites I can look at? or maybe a direction I should be going with a chart for what is dominant/co-dominant/recessive?

https://104homestead.com/science-creating-egg-color/
https://scratchcradle.wordpress.com/2012/07/01/gms1-genetics-of-egg-color/
a couple I have..

 

[Rose Quartz]

Marans eggs still have the white base layer. But the bloom can be thicker at times.

ooookay...

All eggs start off white.

Yes.. I did read that. but blue is put on/into an egg shell before brown is, making for a 3rd color layer that has to be taken into account.

I wonder... A4R, do you have any blueshelled layers? If you do, could you crack one open and tell me what the shell color is under the membrane?

 

[Rose Quartz]

Egg info.
https://academic.oup.com/ps/article/94/10/2566/2077496#31934128

I read this.

 

[Kiki]

ooookay...

Yes.. I did read that. but blue is put on/into an egg shell before brown is, making for a 3rd color layer that has to be taken into account.

I wonder... A4R, do you have any blueshelled layers? If you do, could you crack one open and tell me what the shell color is under the membrane?

I do and I can. It's blue.

 

[Rose Quartz]

https://104homestead.com/science-creating-egg-color/
https://scratchcradle.wordpress.com/2012/07/01/gms1-genetics-of-egg-color/
a couple I have..

I read the second one already the first one is new thanks. ^u^

 

[Kiki]

ooookay...

Yes.. I did read that. but blue is put on/into an egg shell before brown is, making for a 3rd color layer that has to be taken into account.

I wonder... A4R, do you have any blueshelled layers? If you do, could you crack one open and tell me what the shell color is under the membrane?

Notice the membrane pulled back on the bottom left of last pic.