Real Genetics Puzzler for the Experts (New Pics post #25)

[Schultz]

Aww so glad you have figured it out maybe.

Guess I will have to continue to just be stumped. Oh, well we love our little girl anyway!
Here's her daddy and some of his hens just for reference:

 

[halo]

Fascinating thread, Cyn. You may have just figured it out.

 

[speckledhen]

I feel a bit dumb that I didn't immediately equate the variations in Suede's sickles as barring, though. Maybe it's just because my brain couldn't wrap itself around the fact of a pure Blue Orpington having barring. I like to know the "why" of things, as you may have guessed.

 

[tadkerson]

Hi Cynthia,

I do not have any research to back up what I am saying; just my own observations. William Lippincott did some research with barring on blue but I do not have his paper. The most I can gather from research is that barring is less precise; what ever that means?

It seems as though the blue gene has some control over the expression of the barring gene. There also may be another gene or genes that also modify the barring in combination with the blue gene. The modifier could be the E locus gene; like brown, birchen, or extended black.

I have seen zonal barring (certain parts of the body barred and the rest of the bird is blue) in other blue birds. It may be that the blue gene in combination with other modifiers could turn off the barring gene in blue birds also.

This would account for the blue birds not being barred or zonal barred, then the bird could pass on the barring gene to a bird that was not blue(in your case black).


Remember this is conjecture on my part; I am only trying to give a possible explanation based upon my own observations. This would be my hypothesis.

I have to go now. I noticed there are some PMs in my box. I will answer them later today.

Tim

 

[speckledhen]

Thanks so much, Tim! I know how very busy you are right now, but you've always been so great about answering my genetics questons, I had to ask! It's always good to see you here.

 

[Sonoran Silkies]

I believe columbian will restrict barring from certain areas.

I have seen completely blue barred birds, so it is not the blue gene itself.

 

[Krys109uk]

Me too....I've found barring often does not express itself well on blue birds. The areas most likely to show barring being hackles, flights &/or tail. As Suze said, I have also had some birds where the barring was also on the body though not expressed as well as one might expect on black birds.

 

[Sonoran Silkies]

I worried over how to phrase that. I have had two birds who were completely barred, but blue instead of black--very pretty. Righ now I have one hwo has barring on his hackles and a few other areas, but is not completely barred. I don't think it is the blue gene that is causng this; I think it is one or more or a specific combination of the genes that cause patterns.

 

[Year of the Rooster]

Glad I could be of service Speckledhen

 

[Buster]

Quote:
BINGO CYN! This explains a lot about what I have going on here too!