some more questions about raptors

[mateusz1985]

Hi,

I have a few question about Raptors, just correct me if I am wrong.


1. If I cross my raptor male with normal female how I should call the babies, het.eclipse or het.raptor?

a) if I cross those hets together there is 25% chance of geting black eyed gecko (eclipse), no red eyed gecko (raptor), am I right?

b) if I cross those hets back to their father there is 50% chance of geting red eyed gecko (raptor), or the chance is like 1/16 or less?


2. If I cross my Tremper Sunglow female to Raptor male all of the babies schould be Sunglows het. raptor (eclipse?), is it right? If not how I schould call them?

a) If I cross those hets together there is 25% chance of geting red eyed gecko (raptor), am I right?

b) If I cross those hets back to their father there is 50% chance of geting red eyed gecko (raptor)?


I will be very grateful if someone will answer all of my question.

 

[Sandra]

1. Most people would refer to them as het raptor. But since raptors include many line bred traits which aren't necessary passed down to the offspring (remember that raptors are carrot head, carrot tail, tangerine, red/reverse patternless stripe, eclipse albinos) it would be more correct to call them double hets for albino and eclipse. When people labels their geckos as het raptor, they usually mean that they are double hets, not that all the traits in the raptor will be passed down.

a) All the offspring from the raptor and the normal would be normals hets for eclipse and for albino. The results of crossing this offspring together would be:

If albino gene is A (AA normal, Aa het albino, aa albino) and eclipse gen is B (BB normal, Bb het eclipse, bb eclipse).

6.25% AABB (completely normals)
12.5% AABb (normals het eclipse)
6.25% AAbb (eclipses)
12.5% AaBB (normals het albino)
25% AaBb (normals double hets for eclipse and albino)
12.5% Aabb (eclipses het albino)
6.25% aaBB (albinos)
12.5% aaBb (albino het eclipse)
6.25% aabb (double homozygous albino and eclipse - raptor)

(It's a copy from Ron Tremper's book section about double recessive traits, I wasn't feeling like calculating that)

b) Using the example as before:

25% AaBb (normals double hets for eclipse and albino)
25% Aabb (eclipses het albino)
25% aaBb (albinos het eclipse)
25% aabb (double homozygous albino and eclipse - raptor)

2. You would get albinos het.eclipse. Again, since the offspring is carrying both genes, you could call them het raptor.

a) Crossing the offspring would give you:

25% aaBB (albinos)
50% aaBb (albinos het eclipse)
25% aabb (double homozygous albino and eclipse - raptor)

Since you won't be able to distinguish the hets from the normal albinos, they should be labeled as 66% possible hets.

b) Breeding the offspring back to the father would give you:

50% aaBb (albinos het eclipse)
50% aabb (double homozygous albino and eclipse - raptor)

The percentages just state possibility and shouldn't be strictly expected.

I hope it helped.

 

[mateusz1985]

Yes it helped me a lot. Thank you.
I have one more question, because I thought eclipse gene is working as a simple recessive, so if I would cross hets together there would be 25% chance of geting eclipse (black eyed gecko), but if not, simply I was wrong;-)

 

[Sandra]

Yes it helped me a lot. Thank you.
I have one more question, because I thought eclipse gene is working as a simple recessive, so if I would cross hets together there would be 25% chance of geting eclipse (black eyed gecko), but if not, simply I was wrong;-)

No, you are right. If it acts as a recessive gene (I wrote the last post considering that, although I'm not sure if it's completly proven) crossing hets would give you 25% eclipses, 50% hets eclipse and 25% normals.

If you add up 6.25% (pure eclipses) + 12.5% (eclipses het albino) + 6.25% +(raptors) you get 25% of eclipse offspring.