Reptile & Amphibian Forums

I keep seeing geckos that are 66% het for a trait. Ok so i know this has been explained and despite the fact i still don't get it LOL, i would like to know if you had two geckos that were 66% het for the same trait and then bred them, what are the percentages of babies that would come out with that trait, if any???

Thanks

Red
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Crested Gecko Zeek:1.0, Ziggy and Zeus
LEOS: Boo: 1.0 normal , Bronx & Nala: 1.1 blizzard,
Lily: 0.1 patternless, Abby: 0.1 albino, Zoe: 0.1 reduced pattern, Dot: 0.1 hypo
New Girls: Flame, Karma, Bubbles and Bell pics coming soon
Chip: 1.0 papillion (small dog)

I personally can't do the genetics by percentage. Give me the lineage of the parents and what they are het for and I'll do my best, I should be able to get ya pretty close.
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Jeff, "The Gecko Guy"

Its aft's, 66% het for being Amelanistic.

Red

>>I personally can't do the genetics by percentage. Give me the lineage of the parents and what they are het for and I'll do my best, I should be able to get ya pretty close.
>>-----
>>Jeff, "The Gecko Guy"
>>
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Crested Gecko Zeek:1.0, Ziggy and Zeus
LEOS: Boo: 1.0 normal , Bronx & Nala: 1.1 blizzard,
Lily: 0.1 patternless, Abby: 0.1 albino, Zoe: 0.1 reduced pattern, Dot: 0.1 hypo
New Girls: Flame, Karma, Bubbles and Bell pics coming soon
Chip: 1.0 papillion (small dog)

That means both parens were heterozygous for amelanism. The 66% means that of the normal appearing offspring, 66% of them will be het....or basically he has a 66% chance of being het. So the breakdown of all the offspring would be 25-50-25...however, 25% of them should already be amelanistic...so you know what their genetics are...the other 75% all appear normal. So if you had 100 babies...25 should be amelanistic, 50 het, and 25 normal, with no way of telling which are hets and which are normals...to determine the chance of them being het, you just do 50/75 (hets/normal appearing)...which gives you .66666666etc... or about 66% (technically it should be 67% if people round correctly...lol). Anyway...I hope that makes sense...
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Christina

Leopard Gecko Morph Descriptions

2.3 leos
-0.1 tangerine het rainwater albino w/jungle background (Blinkers)
-0.2 jungles (Vahz & Skissor)
-1.0 tremper albino (Spitfire)
-1.0 tangerine rainwater albino (Bronx)

-ignorance is not to be punished when one is trying to gain knowledge...what scares me is the vast number of people who, when given the information to gain knowledge, choose to ignore it.

An animal can only be either het for a trait or not, there's nothing in the middle.

66% hets are referred to as such because of the following reason:

If I take 1.1 albino hets and breed them, my theoretical odds per egg are:

25% normal
50% het
25% albino

However a normal and a het look alike and there's no way to tell the difference. So a normal looking animal is either a normal, and you got the 25% odds, or a het and you got the 50% odds. the babies look normal, but have a great chance of being het albino, infact, the odds are 50 / 75 ... or 66%.

So what it means is that he looks normal but is more likely to be a het then not. But, again, he either is or is not het.

If you breed 2 66% poss. hets and you get at least one albino, this would tell you that both 66% poss hets are, in fact, 100% het albino. If you don't get any albinos from that breeding, you have to ask yourself how patient you are. Its possible that they are hets and you just got skunked on the odds. Its possible that one is a het but the other isn't, which will always only give you poss hets (normal looking), and its possible that they are both normal and therefore you'll get normal offspring.

Your best bets with poss hets is to breed them to either a homozygous (showing the trait) animal or a confirmed het. In both cases, offspring showing the trait will confirm that your poss het is in fact a het.

The other thing you can do is breed the result of poss het x poss het back to their folks and hope that something pops out.

In conclusion ... an animal can only either have it or have not. Any possible het is the result of a breeding that would give hets and normals, but they all look normal and you can't tell who's het and who's not. So breeder's use the terms 50 and 66% poss het to describe them.

Hope this helps,
Joel
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2.5 Leopard Geckos
0.1 Ball Python
0.1 Okeetee Corn Snake
1.0 Blair's Phase Gray Banded Kingsnake
0.0.2 Crested Geckos

WOW that was amazing. Described perfectly thankyou See i want to have an Amelanistic fattail gecko but i've seen the prices and ummmmmmm wow....$300-$500. I've seen the hets for $50-$75 so i thought maybe i'd just get a breeding pair. But the way you described it, i guess i'm just better off buying the Amelanistic instead of taking my chances hehehe.

Oh the choices hehe......its all about whats available at the show later this month too.

Thanks again
Red

>>An animal can only be either het for a trait or not, there's nothing in the middle.
>>
>>66% hets are referred to as such because of the following reason:
>>
>>If I take 1.1 albino hets and breed them, my theoretical odds per egg are:
>>
>>25% normal
>>50% het
>>25% albino
>>
>>However a normal and a het look alike and there's no way to tell the difference. So a normal looking animal is either a normal, and you got the 25% odds, or a het and you got the 50% odds. the babies look normal, but have a great chance of being het albino, infact, the odds are 50 / 75 ... or 66%.
>>
>>So what it means is that he looks normal but is more likely to be a het then not. But, again, he either is or is not het.
>>
>>If you breed 2 66% poss. hets and you get at least one albino, this would tell you that both 66% poss hets are, in fact, 100% het albino. If you don't get any albinos from that breeding, you have to ask yourself how patient you are. Its possible that they are hets and you just got skunked on the odds. Its possible that one is a het but the other isn't, which will always only give you poss hets (normal looking), and its possible that they are both normal and therefore you'll get normal offspring.
>>
>>Your best bets with poss hets is to breed them to either a homozygous (showing the trait) animal or a confirmed het. In both cases, offspring showing the trait will confirm that your poss het is in fact a het.
>>
>>The other thing you can do is breed the result of poss het x poss het back to their folks and hope that something pops out.
>>
>>In conclusion ... an animal can only either have it or have not. Any possible het is the result of a breeding that would give hets and normals, but they all look normal and you can't tell who's het and who's not. So breeder's use the terms 50 and 66% poss het to describe them.
>>
>>Hope this helps,
>>Joel
>>-----
>>2.5 Leopard Geckos
>>0.1 Ball Python
>>0.1 Okeetee Corn Snake
>>1.0 Blair's Phase Gray Banded Kingsnake
>>0.0.2 Crested Geckos
>>
>>
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Crested Gecko Zeek:1.0, Ziggy and Zeus
LEOS: Boo: 1.0 normal , Bronx & Nala: 1.1 blizzard,
Lily: 0.1 patternless, Abby: 0.1 albino, Zoe: 0.1 reduced pattern, Dot: 0.1 hypo
New Girls: Flame, Karma, Bubbles and Bell pics coming soon
Chip: 1.0 papillion (small dog)