genetics 100% chance

[BALLPYTHON]

if you were to breed two het albinos and they had a clutch of 4 eggs. is it a 100% chance that you would get one albino out of that?
i was talking to some ppl and they were saying even if you breed 2 albinos together the chance of getting an albino is rare.
i dont think this is true based on what ive read and what you guys have said, but most of the time when you breed certain animals can you tell what you should be expecting?

[Marla]

If you breed 2 albinos of compatible type together (depending on species, there may be more than one type of albinism and they may or may not be compatible), there is a 100% chance of all offspring being albinos. If you breed two definite het albinos together, statistically you are likely to get one albino hatchling for every 4 hatchlings. Because it's just statistical probability, you could get all albinos, all hets, or all normals.

To illustrate how the probability works, put 25 white marbles, 25 black marbles, and 50 red marbles of identical size and texture in a non-see-through container and shake until well-mixed. Pull out 4. Write down what they are. Put them back and shake then pull out 4 more. Write them down. Repeat a couple more times. Now, each of those sets of 4 marbles was a clutch from two het albino parents. The white marbles were albino babies, black marbles were normal (wild-type), and the red were hets. Did you get exactly the same results every time? Did you ever get an all-albino clutch or an all-normal clutch? The more times you draw 4 marbles, the closer your draw numbers should be to overall 25% albino, 25% normal, and 50% het hatchlings (or marbles).

[Adam_Wysocki]

if you were to breed two het albinos and they had a clutch of 4 eggs. is it a 100% chance that you would get one albino out of that?

Not at all ... each egg only has a 25% chance of producing an albino. In a 4 egg clutch it's something like a 32% chance that you won't get an albino from a het x het breeding (Randy, was I close???).

i was talking to some ppl and they were saying even if you breed 2 albinos together the chance of getting an albino is rare.

That's not true. ALL of the offspring from albino x albino will be albinos. Don't talk to those people anymore, they are idiots.

but most of the time when you breed certain animals can you tell what you should be expecting?

Oh no ... don't "count" on anything. I bred a co-dom male to a female that laid 12 eggs last year, and every single one was normal .... I think there's like a .02% chance of that happening ... and it DID!!! Mother nature has a way of putting you in check every now and then.

For the most part, things end up working out in the big picture ... but counting on individual eggs and individual clutches is like rolling the dice!

-adam

[daniel1983]

When two het albinos are breed, each egg will have a 25% chance of being an actual albino. With four eggs you could end up with all albinos, no albinos, or a mix. That is up to the ball python gods. When two actual albinos are breed together all of the offspring will be albinos. You never really know what you are actually going to get when two ball pythons are breed. You only know the odds (%) of producing something.

Maybe this will help more.

also, check out this site: http://www.ballpython.ca/genetics.html

mark has a really cool genetics presention.... click on recessive at the bottom of the page and it will show you how albinos work.


I hope that helps a bit, a visual always helps.

[Adam_Wysocki]

If you breed 2 albinos of compatible type together (depending on species, there may be more than one type of albinism and they may or may not be compatible), there is a 100% chance of all offspring being albinos. If you breed two definite het albinos together, statistically you are likely to get one albino hatchling for every 4 hatchlings. Because it's just statistical probability, you could get all albinos, all hets, or all normals.

To illustrate how the probability works, put 25 white marbles, 25 black marbles, and 50 red marbles of identical size and texture in a non-see-through container and shake until well-mixed. Pull out 4. Write down what they are. Put them back and shake then pull out 4 more. Write them down. Repeat a couple more times. Now, each of those sets of 4 marbles was a clutch from two het albino parents. The white marbles were albino babies, black marbles were normal (wild-type), and the red were hets. Did you get exactly the same results every time? Did you ever get an all-albino clutch or an all-normal clutch? The more times you draw 4 marbles, the closer your draw numbers should be to overall 25% albino, 25% normal, and 50% het hatchlings (or marbles).

Sigh ... on paper and with marbles and coins it's always so much more fun than the practical application ... holding your breath and crossing your fingers while you count the different colored heads sticking out of those eggs is nerve racking!!

-adam

[BALLPYTHON]

ok so you can beed two albinos together and it is a possibility to get all normals. so all these websites are just showing statistical information based on that genetic square??
so what if you breed a normal to a het albino then there can even be a possibility of getting an albino out of that.
anything can happen, but whats written is whats common??

[daniel1983]

click here... http://www.ballpython.ca/what_get/recessive.html

two albinos will give you all albinos. Two het albinos can give you normals, albinos or a mix. A normal to het albino breeding gives you 50% het albino offspring.

[Adam_Wysocki]

ok so you can beed two albinos together and it is a possibility to get all normals.

No.

Genes come in pairs. Albinos have two "albino" genes and no "normal" genes, so breeding two albinos together cannot produce normals, because there are no normal genes to be contributed to the offspring. Only albinos.

so all these websites are just showing statistical information based on that genetic square??

Yes, it's just the scientific probability of what "should" happen. Not fact.

so what if you breed a normal to a het albino then there can even be a possibility of getting an albino out of that.

No, because the normal doesn't have any albino genes to contribute, none of the offspring will get "two" albino genes needed to make albinos. Making albinos from a het to a normal is impossible.

anything can happen but what is written is what common??

Not anything. There are still rules based on genetics. What is written is the expected ratios if all of the proper genetics are in place.

-adam

[Marla]

ok so you can beed two albinos together and it is a possibility to get all normals. so all these websites are just showing statistical information based on that genetic square??
so what if you breed a normal to a het albino then there can even be a possibility of getting an albino out of that.
anything can happen, but whats written is whats common??

You can only get normal-appearing hatchlings from an albino x albino cross if they are two types of albinism that are not compatible, but even then all the hatchlings would be 100% het for both types of albinism. Otherwise, as I said and Adam said, the only possibility is all albino hatchlings.

If you breed a normal to a definite het albino, all the offspring will look completely normal, but statistically half of them should carry one gene for the albino trait. That means if you raised all the siblings from that clutch, odds are that eventually with the right pairing, you would produce an albino.

[Marla]

Sigh ... on paper and with marbles and coins it's always so much more fun than the practical application ... holding your breath and crossing your fingers while you count the different colored heads sticking out of those eggs is nerve racking!!

-adam

That may be, but in the end it should be more profitable too!