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My little ones vs. Mendel's law

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Dominick

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It's the first time that I've got larvae from my axolotls, but their color is baffling me.
I've added a picture so you guys can see them.
In total I have 11 larvae, and their colors are like in the picture: I have a few yellow'ish ones, and the others are more brown'ish. I'm assuming that the brown colored ones are wildtype?

Now, here is what confuses me:

My male is an albino, and his parents were golden x albino.
My female is a slightly spotted leucistic and here parents were leucist x a heavily spotted leucist.

So, in that sense, is it even possible for them to have wildtype larvae if they'd follow Mendel's laws? So I'm assuming this isn't the case.
Or am I just wrong and aren't the brown ones wildtypes?
 

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oceanblue

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They look like wild types to me, though obviously it is hard to be absolutely sure from this photo.

Remember that albino and leucistic are separate characteristics. Your female must have two copies of the leucistic gene but does not have two copies of the albino gene.

It depends on what your male is. He must have two copies of the albino gene but he could be white because he has two copies of the melanoid gene rather than the leucistic mutation. Does your male have shiny eyes? I guess he doesn't and Mendels laws stand!
 
jane1187

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In fact by Mendels laws of inheritance you SHOULD have wild type larvae. Both of your adults, leucistic and albino, have recessive genes. By crossing them you have created offspring which only carry those recessive genes, rather than express them as the parents do. I think you've both slightly misunderstood the genes causing albinism and leucism.

Most of your offspring should be wildtype and any other offspring are a result of carried recessive genes the parents had.

Effectively by crossing two different recessive genes you have created offspring which are all heterozygous (carriers) of both genes, but all of which express a wildtype colouration.
 
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Dominick

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Hmm, I wouldn't say that his eyes are shiny. I really didn't expect to have wildtype babies!
It feels like the kind of situation were you have two Caucasian parents and you get a baby with a darker skin tone, haha!

Thanks for the answer. ^^
 
Kaysie

Kaysie

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Except you don't have two Caucasian axolotls. You've got an albino and a leucistic. Think of leucistics as non-brown wildtypes. They have the same colors as a wildtype, they just don't migrate off the neural crest.
 
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SuperSteve

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Mine started off as a dark brown colour but are slowly turning lighter and lighter by the day. On some of them they are light brown all over but white patches are starting to show up.
 
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