What Is Your Methodology?

[Jenna4Herps]

Just curious as to what method or initials do all of you use when calculating Punnett Squares for dominant and recessive genes. There seems to be sooo many traits out there now with so many crosses and blends!

So tell me all, do you have a standard methodological system for keeping all your traits/genes straight when calculating the odds of breeding your geckos? For example using "p" for patternless? What letters of the alphabet do you use for each trait and which seems to be the easiest for you to use?

Let's see your list all! How DO you keep it all straight? :main_robin:

 

[PaulSage]

I just do them in my head.

 

[fabian60115]

I just ask jeremy or Jason:main_laugh:

 

[Kimjorg]

Like Paul I just do it in my head.

 

[Okee Reps]

It'll become second nature and eventually you'll be able to do it in your head. Someone posted a website or something that would do it for you but I'm not sure what is was. Maybe someone will post it again.

 

[2.1SRR.YYC]

I don't keep it in my head but I do keep it in my Favorites...:main_laugh: http://www.geneticswizard.com/

 

[GroovyGeckos.com]

It is pretty easy to remember het X het =25% probability(1 out of 4 chance), or homo X het =50% probability. DH X DH gives a 1 out of 16 chance. I do not bother with punnet squares.

Here is my reason. Probability is just that, you have a 1 in 16 chance from each egg(DH X DH), and since a Leo may take a whole season to lay 16 eggs, you may never see that exact outcome.

Alot of people read 25%, as they will hatch 25% of the desired trait, but that is not how it works. It means you have a 25% chance with each egg. You could potentially hatch many eggs before ever getting what you are after.

 

[Jenna4Herps]

Oh, I know how to do probabilities and the such, and I even have that website bookmarked too. It's also easy to do it in your head when you have one or two traits to consider. I was just curious as to whether or not some had different ways recording the odds when the variables were more than one or two. There are many blends of traits out there now. One good example I guess would be the RAPTOR. If you were breeding with anything other than a raptor or adding something to the raptor genetics, it can get pretty crazy.

Hmmm... let me think of an example. Okay... I have a female that is an:

albino
lavender reverse stripe
100% het raptor
2 snake eyes

I already have a mate for her that is a male albino lavender reverse stripe, 100% het raptor, with normal eyes. So the odds are easy to figure out with them. The only difference between them are normal eyes & snake eyes and both are het for raptor.

But, let's say I decided to mate her with another morph that had more than one phenotype? That could get pretty wild.

I was just curious if you all had a special method of recording the traits to keep track of it all. But, if you keep your crosses easy and only consider one or two traits, it's a piece of cake. And yeah, probabilities mean nothing on paper when leo's only lay 2 eggs each clutch lol. You could have babies hatch out for years and not get that special one of out 16 or whatever the odds may be :main_yes:.

 

[GroovyGeckos.com]

I see what you mean, it is alot more complicated when working more traits.

As for the Raptor, it is pretty straight forward. There is one simple recessive gene, and one that will act like a recessive(it is not a simple recessive though). Then all of the patterning genes will be included as part of the package. You will never be able to predict patterns, so I`de simply cancel out all of the patterning traits, and just know you could hatch all of them. You could breed to any pattern(non banded), and hatch a mix of patterns from them, since patterns are also not simple recessive traits.

Then take the Albino trait, and the "Raptor" (snake eyed or otherwise) trait, and count them as only two. If it were a Blizzard, Patty, or Mack cross, you were doing then only count three traits.

I know you say you have a het Raptor, but it has snake eyes, and that is a homozygous form of Eclipse/Raptor, not a het. That would be a het Aptor female then. So what you have there is pretty much ony two traits you would need to worry about. Her babies would be consider DH Albino, and Eclipse, and she can pass all of the patterning genes on to her babies.

A R/Aptor or het can be viewed as a multi-het, since it is the combination of patterning genes that made them, not a seperate mutation. The "Patternless Stripe" project proved that theory, when breeding Stripe to Reverse Stripe, made "homemade" het Eclipses.

 

[Jenna4Herps]

Ack. Raptor was a bad example I guess lol. What you said is absolutely true :main_laugh:. Oh well, I guess you all get my point that with some combinations it could get pretty complicated. I think I will have my head spinning with working on the recessive traits of DB's. But, fun doing it!

Good post Dan. :main_thumbsup:

 

[GroovyGeckos.com]

Thanks, Jenna.