Complementation of Axanthic Lines?

[Mendel's Balls]

I was looking at Ralph Davis's website and I noticed that there are different axanthic lines.....the Axanthic_VPI and Axanthic_Jolliff are two.

The notes on his site tell us that these two lines are incompatible. What does this mean exactly? Does this mean that the two recessive phenotypes when crossed produced F1 offspring that were all normal?

Has anyone tired matting two of the F1 offspring together to see what happens in the F2 generation?

[gncz73]

pretty much all the lines have been crossed and recross and ost if not all the time the females either slug out or all ofspring is still born from what i understand

[daniel1983]

I think there have been a few DH axanthics produced. There are so many 'lines' out there.....I am sure two of them will eventually cross. VPI and NERD line axanthics seem to look the best out of them all to me.

[Mendel's Balls]

I think there have been a few DH axanthics produced. There are so many 'lines' out there.....I am sure two of them will eventually cross. VPI and NERD line axanthics seem to look the best out of them all to me.

DH axanthics....this is another line?

[SnakeySnakeSnake]

DH axanthics....this is another line?

I think he means Double Het Axanthics, meaning it carries two axanthic genes, but since they arent compatible, it appears as a normal. And if you breed it to either of the axanthic lines it is Double Het for, you can produce Axanthics.

[Mendel's Balls]

I think he means Double Het Axanthics, meaning it carries two axanthic genes, but since they arent compatible, it appears as a normal. And if you breed it to either of the axanthic lines it is Double Het for, you can produce Axanthics.

Ok...if Double Hets for two different Axanthic traits have been produce....Have two Double Het Axanthic been breed? Does anyone know the offspring that results from this cross?

If two seperate axanthic lines of the P1 generation produce a normal in the F1 generation by complementation, and then you breed two F1s, you would expect to get a 9:7 ratio of normal balls to axthanics. This is a modification of the normal two-trait Mendelian ratio of 9:3:3:1. (3+3+1=7)

[Mendel's Balls]

To learn about what I mean when I say complementation see the following sites:


http://tinyurl.com/jcj82

See Especially The section entitled Mutations with the same Phenotype

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http://en.wikipedia.org/wiki/Complementation


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http://www.ndsu.nodak.edu/instruct/mcclean/plsc431/mutation/mutation5.htm

[muddoc]

Sometime ago Mike Jolliff was selling some snow project animals that did carry genes for two different lines of Axanthics. I don't remember which two lines, but obviously one of the linesw was the Jolliff line. By the way, there are five different proven lines that I know of: VPI, TSK, Jolliff, NERD and D&M. From what I have heard the D&M line and the TSK line are compatible. However, I have never actually seen the results of the breeding of the two lines together.

[muddoc]

I also meant to add that in my opinion, if a line is proven to be compatible with another line, then I believe that the new line is not really a new line, but an animal that was imported, and a descendant connected to the original line. I hope that didn't sound to confusing.

[RandyRemington]

I don't know if anyone has yet crossed the homozygous versions of any of the lines yet. Maybe as they get cheaper someone will be willing to do this experiment.

The original (only?) cross to test compatibility between VPI and TSK lines was a het VPI male that had changed hands several times to two TSK het females producing two clutches of 7 eggs each with no axanthics hatched but that's 6 year old info so maybe more is known by now.

I believe Jolliff did some kind of cross with VPI proving those two incompatible but I don't remember or never knew the details.

I'm completely out of the loop on the newer lines. What does "D&M" stand for and can anyone confirm it's compatible with TSK? Has the NERD line been crossed with any of the others?