Figuring out Genotypes

hannahll · Dec 17, 2013

I read up on "Genetics and Colour" on the axolotl.org website, but i can't figure out what their genotypes could possibly be to result in this.
We bred a wildtype with a melanoid. The wildtype we know nothing about parents, but we know our melanoid had one leucistic parent and one albino parent.
Our results: Wildtype, melanoid, and albino babies (as we can see so far)
Maybe it's not that complex or even obvious but...

Would this mean the two we crossed are heterozygous for the color variants?

Jennewt · Dec 17, 2013

What color is the melanoid parent? Dark or white?

In your offspring, when you say melanoid, do you mean dark melanoid or white melanoid?

hannahll · Dec 17, 2013

I apologize, i mean dark melanoid

auntiejude · Dec 18, 2013

OK, here goes my genetics logic:

if you have both melanoid and albino babies it must mean your wildtype carries recessive genes for both albinism and melanism. Your melanoid does too, but you already knew that from it's parents.

Since you have no leucistc babies it must mean that your wildtype is DD for dark, as we know your melanoid must carry a recessive d form it's leucistc parent.

So your wild type is D/D M/m A/a AX/-
Your melanoid is D/d m/m A/a AX/-

If' someone else has a better explanation or I've done that wrong please tell me!

hannahll · Dec 18, 2013

auntiejude said:
OK, here goes my genetics logic:

if you have both melanoid and albino babies it must mean your wildtype carries recessive genes for both albinism and melanism. Your melanoid does too, but you already knew that from it's parents.

Since you have no leucistc babies it must mean that your wildtype is DD for dark, as we know your melanoid must carry a recessive d form it's leucistc parent.

So your wild type is D/D M/m A/a AX/-
Your melanoid is D/d m/m A/a AX/-

If' someone else has a better explanation or I've done that wrong please tell me!

That sounds right to me! But here's another question, today, i was cleaning the tank and i found three babies that appeared to be gold albino. How is that possible????

Jennewt · Dec 18, 2013

hannahll said:
... we know our melanoid had one leucistic parent and one albino parent.

That's impossible for a dark melanoid, unless there was another father involved

hannahll · Dec 18, 2013

Jennewt said:
That's impossible for a dark melanoid, unless there was another father involved

That's interesting because that's kind of what i thought when the breeder told me. That's probably the case! & possibly why i'm seeing golden albino offspring.

usafaux2004 · Dec 19, 2013

So....given that I at random kept 27 eggs out of 640...and 7 of them are albino, possibly gold albino...guess they aren't that rare. So why the price + on their sale?

auntiejude · Dec 19, 2013

Jennewt said:
That's impossible for a dark melanoid, unless there was another father involved

OK, so the 'melanoid' is more likely to be a dark wildtype right? I thought my male was melanoid when I got him - he's black, and didn't appear to have any iridophores when I got him. He now has nice shiney golden iridophores.

This may mean that the babies you thought were melanoid are also dark wildtypes. I have juvie wild types almost as dark as their dad, and some that are paler and more speckled.

Golden albinos are D/- M/- a/a AX/-, so it's quite possible to have some with your suspected parental genotypes.

guess they aren't that rare. So why the price + on their sale?

Because they are usually considered more desirable than wild types.

Vyaavi · Dec 26, 2013

I'm doing some practice with axy genetics, so here's my take... The albino grandparent was actually albino melanoid.

If what you think are melanoids are actually wildtype, then things get weird. The parents would then be AaMMDd and AammDd, but then you'd HAVE to have leucistics. Since you have no leucistics, I'm pretty darn confident in that chart.

usafaux2004 · Dec 26, 2013

Figuring out the genetics is fun! I wouldn't count on wilds being anything"-" all around.

As far as I can tell for my two adults:

Wildtype: D/D, A/a, M?, AX?
Leucistic: d/d/, A/a, M?, AX?

It looks like I've got Wilds and Albino Golds, though some of the albinos don't look as gold...

auntiejude · Dec 27, 2013

Jennewt said:
That's impossible for a dark melanoid, unless there was another father involved

I've been trying to figure this out - a dark melanoid would be D/- m/m and A/-, and from the parentage I would have said this was possible:
albino parent would be D/- m/- and a/a
leucistic parent would be d/d m/- and A/-

Or do I have that wrong?

hannahll · Dec 30, 2013

Oh man, you lost me! Thanks for all the help though. I understand most of it but maybe it will become more apparent once the babies grow up

Margie · Dec 31, 2013

Jennewt said:
That's impossible for a dark melanoid, unless there was another father involved

And to make matters even more confusing, a golden albino can be so pale it looks like a white albino, especially since white albinos can take on a pale yellow color with age.

One of my breeding pairs looks like a white albino and a leucistic. But since they consistently throw some melanoids, I conclude that the white albino must be a very pale golden albino.

Essener · Jan 2, 2014

hiya,

i my axolotls layed eggs aswell and i was looking into genotypes and fenotypes aswell.
the father of the eggs is albino and the mother is white (leucistic) (i dont know what color their parents where).

can any1 give me an indication?

usafaux2004 · Jan 2, 2014

You're going to have to wait for the babies to develop. What kind of albino?

seagull · Jan 2, 2014

i figured out a few genetics of the 3 adult axolotls ive had
burrito is obviously aaD-MmAX-
ik she is Mm because bean is mm because hes melanic and burrito had melanic babies with him so she had to have a recessive melanic allele
bean is AaD-mmAX-
ik he is Aa because he and burrito had albino babies too
pinniata is A-ddM-AX-
if any of his babies become leucistic then ik burrito will be Dd
i have no clue how to test AX

auntiejude · Jan 3, 2014

Essener said:
hiya,

i my axolotls layed eggs aswell and i was looking into genotypes and fenotypes aswell.
the father of the eggs is albino and the mother is white (leucistic) (i dont know what color their parents where).

can any1 give me an indication?

With that combination almost any colour baby is possible. 'Albino' and 'Leucistic' are broad terms that cover several phenotypes.
Since you don't know the grandparents, when you know what colour the babies are you should be able to work out the genotypes of the parents.

Essener · Jan 7, 2014

most of them look like they have somekind of arrow shape dark head and a line running down their backs

Figuring out Genotypes

New member

Administrator

New member

New member

New member

Administrator

New member

Member

New member

New member

Member

New member

New member

Member

New member

Member

New member

New member

New member