Re: "Small Pattern" Yellow Mosaics

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Posted by Greg on October 02, 1999 at 19:48:11:

In Reply to: posted by Clarissa on October 02, 1999 at 14:00:22:

: I don't know if you noticed this or not, but the "small pattern" mosaics display patterning in the dorsal fin as well as the tail. I don't know if this is significant in your genetic study.

: Just an observation.

: I enjoyed reading your study. I'm impressed. Are you a researcher professionally? Your logic skills seem to be excellent. I wish I could apply them to my guppy breedings. I'm having a tough time with that "Pink Chiffon" variety I "discovered". It's such a pretty color, too. My matings keep throwing the colors of the original pair(s) in addition to some of the pinks. Any suggestions?

: Clarissa

I did notice that the pattern shows itself on the dorsal fin. Maybe that will be my next study.

In answer to your question, no I'm not a researcher, but I am a computer programmer and you have to be able to incorporate logical thinking into that. After all, when you boil it down, genetics is a bunch of encoded properties and a lot of if..then..else logic, much like programming.

With respect to your coloring problem, that's going to be tough. Since you are getting throwbacks to the parent's colors I would think that the trait is some form of recessive trait. Possibly a cumulative thing.

It's possible that some colors only show through in the heterozygous gene pattern (i.e. Aa) and can't be seen in either homozygous pattern (AA or aa). If that's the case, it is impossible to develop a pure strain since you can't get 100% Aa offspring when that's what one of the parents is.

I've speculated that body and tail color may actually be a combination of three or more genes. The result you get is similar to your computer monitor, which uses Red, Green and Blue in various combinations to come up with what you see on the screen. That's only a guess though and would be very difficult to prove.

I have noticed that when breeding my Yellow Mosaics for this test that I initially got three different "grades" of yellow. Possibly the "Yellow" gene manifests its physical appearance differently when found in the combinations YY, Yy and yy.

I got those guppies at the end there with definite blue coloring near the base of the fins, so I'm not sure where that came from since I used only pure Yellow Mosaic stock. I wasn't paying any attention to color in my research, but found it interesting.

I hope that this gives you an idea or two.

-Greg

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: : I don't know if you noticed this or not, but the "small pattern" mosaics display patterning in the dorsal fin as well as the tail. I don't know if this is significant in your genetic study.

: : Just an observation.

: : I enjoyed reading your study. I'm impressed. Are you a researcher professionally? Your logic skills seem to be excellent. I wish I could apply them to my guppy breedings. I'm having a tough time with that "Pink Chiffon" variety I "discovered". It's such a pretty color, too. My matings keep throwing the colors of the original pair(s) in addition to some of the pinks. Any suggestions?

: : Clarissa

: I did notice that the pattern shows itself on the dorsal fin. Maybe that will be my next study.

: In answer to your question, no I'm not a researcher, but I am a computer programmer and you have to be able to incorporate logical thinking into that. After all, when you boil it down, genetics is a bunch of encoded properties and a lot of if..then..else logic, much like programming.

: With respect to your coloring problem, that's going to be tough. Since you are getting throwbacks to the parent's colors I would think that the trait is some form of recessive trait. Possibly a cumulative thing.

: It's possible that some colors only show through in the heterozygous gene pattern (i.e. Aa) and can't be seen in either homozygous pattern (AA or aa). If that's the case, it is impossible to develop a pure strain since you can't get 100% Aa offspring when that's what one of the parents is.

: I've speculated that body and tail color may actually be a combination of three or more genes. The result you get is similar to your computer monitor, which uses Red, Green and Blue in various combinations to come up with what you see on the screen. That's only a guess though and would be very difficult to prove.

: I have noticed that when breeding my Yellow Mosaics for this test that I initially got three different "grades" of yellow. Possibly the "Yellow" gene manifests its physical appearance differently when found in the combinations YY, Yy and yy.

: I got those guppies at the end there with definite blue coloring near the base of the fins, so I'm not sure where that came from since I used only pure Yellow Mosaic stock. I wasn't paying any attention to color in my research, but found it interesting.

: I hope that this gives you an idea or two.

: -Greg

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