Lavender orpington genetics question?

Since lavender dilutes both black and red, it is recommended to use a black bird in your crosses to generate a consistent coloring of lavender plumage in the resulting offspring. Lavender cannot dilute white, since white is the absence of color.
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For the crosses, it works like this:

lavender X lavender = 100% lavender
lav X black = 100% black carrying the lav gene
black carrying lav X black carrying lav (visually black birds) = 50% black carrying lavender, 25% lavender and 25% straight black
lav X black carrying lav = 50% lav and 50% black carrying lav
Does it matter which one has to be the Roo in this equation?
 
No; lavender is not a sex-linked gene. Either parent can bring it in. The percentages hold regardless of which parent is which colour. However, for the percentages to be accurate, you need to breed larger numbers of chicks. If you only hatch 4 chicks, you will not necessarily get the probable percentages.
 
Just wondering if you could help me with my genetics. I have in one breeding pen a Lavender Roo and a Black/Split Black Dun Roo and all Lavender Hens. However, I have babies that came out looking blue, not Lavender. I'm enclosing pics of the parents and the chick which is about 3 weeks old. If you could help me figure out how this came out genetically, that would be great!



 
Ok so this may be a dumb question but if I understand everything that has been said about the lavender genetics you will not get lavender by crossing lavender to Buff then? I just acquired 3, one year old lavender roosters this weekend and 11 Chicks one blue and 10 that appear to be splashes and a Black chick they are all out of a lavender over blue or blackor those varieties in splash. I am kind of impatient and would like to get something to cross my roos with right away but can only seem to find buff orpington hens available.
 
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Thank you for all the great information! I have a Lavender Orpington rooster, and i have 3 LO hens as well as Olive Egger, Easter Egger, Buff Chantecler, Dominque, Black Australorp, Speckled Sussex, and a Buckeye all 7 are hens. How do I find what to expect from breed with a Lavender Orp. rooster?
 
Lavender is recessive, so you need two Lavender genes to produce Lavender offspring. Your Lavender hens will produce Lavender with Lavender rooster. For your other hens, unless your Olive egger or Easter Egger has a Lavender gene somewhere, all your hens will produce chicks that most probably appearance wise, look like the color of the hen.

I wouldn't be mixing breeds though unless you just want barnyard mix.
 
Not totally positive about this, but here's my input. Anybody free to correct me.

1) White Orpington offspring, split to Lavender. So they will look like Whites, but carry the Lavender gene.
2)Patridge Orpington offspring, split to Lavender. They will look like Patridge, but carry the Lavender gene.
3) Black Orpington offspring, split to Lavender. They will be Black, but carry the Lavender gene.

However, if you breed the chicks of any of these crosses back to Lavender, you will have a percentage of Lavender Orpington offspring. I think 50%.
 

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