snows....confuse me.... just a quick question...

[ReptilianGems]

Jim I know you are`nt making this up. lol

Well sure, Albey called them Incomplete Dominant, and the others were calling the "Co-doms", so I had to try to figure out more about them.

I will say the difference between the two types is still confusing me. Especially when you say they should be either blended, or combined in appearance. It is hard for me to say that the Mack Snows and MSA`s I have are one or the other.

Because like I said:

1. they start out WHITE (which isnt a blending)
But then:

2. they gain some yellow, but not all of them (even more yellow as more normal genes are added)

3. some even have orange in places

It is not as if all of the Macks are completely yellow, I mean some have it in placesw/ areas of white still, others are just covered in it, throughout.

Every time I try to think for myself and decide which it is, I think: Is #2 and #3 a blending or a combination? Seems like it depends on how you look at it.

It isn't really blended or combined, but rather blended, and present together (fully expressed). In my opinion, in order to fit the definition of CoDominant, there would be a seperation of the two phenotypes, or in other words, some areas would be completely white with no yellow at all, and some areas would get a full dose of yellow, with no white trying to sneak in.

 

[GroovyGeckos.com]

Jim, Put "blended or fully expressed", in place of "blended or combined" I could not think of the right words at the time. :main_laugh:

Sorry about that.

Ok more specifically what I mean is what two parts? A Leopard gecko has no hair, it has small scales, even very small cells, and the things(not sure of the word) that display color pigment, etc. Also this is a spotted animal.

Couldnt it be something as small as that displaying the difference in color? If so, though both colors are present right next to eachother, they could appear blended together instead. I dont know, just my way of thinking.

I kind of think of my uncle who worked printing aluminum cans showing me the thousands of tiny dots of different color that make up the colors we see on a soda can. They are really all different colors blended together to make the colors we can see w/ our eyes.

 

[ReptilianGems]

Dan,

I know you don't need these, but I was going to add these visual aids to my web page, but haven't gotten around to it yet. Thought it might help somebody out there. This first one is for simple Dominance. One red parent (Dominant), and one white parent. All the offspring will be red.


(In all 3 examples, the parents are homozygous.)


SIMPLE DOMINANCE

 

[ReptilianGems]

With Incomplete Dominance, blending of the two parental phenotypes occurs. One white parent, and one red parent. All the offspring will be pink.

INCOMPLETE DOMINANCE

 

[ReptilianGems]

With Codominance, both parental phenotypes are fully expressed, and are present together. One white parent, and one red parent. Offspring that have both colors present at the same time.


CoDOMINANCE

 

[bro paul]

Awesome visuals Jim...but now I'm a little more confused (usually pictures help me!). Can you give examples of leo morphs that fit some of the above illustrations?

 

[GroovyGeckos.com]

OK maybe I did need those. I do understand the difference better. Thanks Jim. How they pertain to the geckos is where I get lost also.

Mack Snows, at least, seem to all be different as far as that goes. That is now the part that confuses me. I see both in them in different ways.

First the thing like I was saying, are we looking at them when they hatch or as adults to determine this? That would make a huge difference.

Next, I see some Macks that stay white, not very many though.
Some turn yellow pretty much allover, but there are also some that fall inbetween and have white and yellow still.

Sorry I dont mean to confuse anyone with my ramblings. Jim are you sure they dont mean: either ALL pink offspring, or HALF red/HALF white offspring? See what I am saying? Not a flower with both color petals on it, but different flowers being red or white on the same plant, instead of pink.