Opinions on genetics

Hey, I just wanted some opinions on the genetics of this little one. The first baby was just a normal baby. The parents are a normal female and a bold Mack snow het tremper albino blizzard male. The male’s father carried white and yellow, bold stripes, a red stripe, and some lines of tangerine (mandarin and inferno)

My assumption is a Mack snow, maybe a bold/bold stripe from the very wide white and those spots, but I also wanted a few opinions. It’s one of the oddest babies I’ve hatched out.


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Curious – how does one prove a leo not to be Mack Snow?

That top photo looks (clearly) to be snow, and may be het albino (what strain?) and is 50% het blizzard. W&Y can be a bit hard to tell without some comparison hatchlings and knowledge of the offspring of the pairing in the past; when I worked with W&Y I had a better time of it once I knew how the gene acted in my animals. It doesn’t look to me like that one is W&Y, though I’m rusty on my leo genetics.

Is the male parent actually W&Y? Better to list the actual genetics rather than that of his own parents – sounds like the sire is for sure Mack Snow het albino (what line of albino? what were his parents?) het Blizzard; he may be W&Y; and that’s it.

Bold/stripe may or may not develop, but you’ll know more once it is older. Line bred traits like that are best either bred for (so, selective choosing of pairings) or otherwise ignored. Calling something that kinda sorta looks somewhat bold/striped/tangerine/etc, or simply has those parents, by that name is a bit of a problem – and leads to odd IDs like ‘inferno mandarin’, which is a bit confused since those are just two named tangerine lines, not distinct genes.

(edited to sort out sire’s genetics)

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Hello, thanks for the response. The female was sold to me as a normal but she just looked very light with the same tones I’ve seen of many Mack snows so I paired her to one to see if she may have had snow in her but with only one baby hatching out Mack I doubt she is.

I know it’ll develop better and will be easier to see what all is there. The dad of these two is for sure a Mack snow bold het albino blizzard but that’s about all I can confirm based off his appearance. Doesn’t show any white and yellow or the lines of tangerine but I know they can carry and then pass them onto the baby which is why I listed the genetic fully like that.

That doesn’t prove that she’s not snow, but is suggestive depending on the number of hatchlings. If a gecko is sold as a normal but is light in color, the most reasonable assumption if it has been produced by a quality breeder is that it is simply a light colored gecko (and if it wasn’t produced by a quality breeder then maybe using it for breeding stock isn’t a great idea).

W&Y is dominant, so a carrier is a visual carrier.

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Thanks. She is on babies 4, and two have hatched: Mack and two normals.

This is my first time working with white and yellow, and I’m still getting used to the genetics, so that’s a lot of help, thank you!

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I have a random question if you can answer or any information. This is the male I have, who is white and yellow (with many other genetics) and this is one of her daughters, from last year. I know she is a Mack snow tremper, but also pretty light. Would you say she has any white and yellow? I’m trying to learn and see, but there aren’t great examples of it with other genetics, so I just wanted an opinion.
Male -


Female - (she is a little brighter in this photo)

I don’t see W&Y in that albino. Comparing to W&Y siblings can help draw out the distinctions.

Okay, her other two siblings were Mack Snow Bolds with no outstanding coloration. I doubted it, but I am still trying to determine how being white and yellow-looking affects the other genetics.