Re: Spider morph question
Quote:
Originally Posted by Adam_Wysocki
That you personally know of. Right? ;)
-adam
To date, no one has published the existance of a super spider, however, crazy bp breeders out there are always "bustin' their balls!" to come up with hot new morphs, so we may see one soon.
That better Sir Adam? ;) :D
Re: Spider morph question
Quote:
Originally Posted by Adam_Wysocki
That you personally know of. Right? ;)
-adam
man..... theres too many secrets in the breeding industry. I wanna be in the know too!
Re: Spider morph question
Quote:
Originally Posted by Adam_Wysocki
That you personally know of. Right? ;)
-adam
I dont wanna know where it is, who has it, or what it looks like....yes or no...is there in fact a visual homozygous spider?????!
I guess if I had a male spider that I crossed to 10 normal girls every year for 10 years and came up with nothing but spiders...I'd keep it to myself to!
Re: Spider morph question
Quote:
Originally Posted by Royal Snakes
Hi, I‘m new and I’m still learning about the different morphs and the genetics behind them. I have found out that the spider morph is dominant but I am unsure what that means because if co-dominant genes like pastel shows even in the het form how much more can a gene do when it is dominant?
Just a guess but does it mean that it is homozygous and skips the het even when a spider is bred to a normal for example?
Ball Pythons, like us, receive two copies of every gene-one from mom, one from dad. The copy they receive from mom and dad might not be exactly the same. We call these copies of a gene the alleles (or versions) of the gene.
The set of alleles that an individual has is called genotype. If an individual has two alleles of the same type he/she is homozygous for that allele. If he/she carries two different copies of a gene we call this individual a heterozygote (ote is the noun, ous is the adjective).
When talking about the dominance of a trait such as spider, what we are really talking about is the dominance relationship between the alleles or different versions of a gene. We are talking about how one allele of the gene pair influences the other allele of the gene pair.
A gene pair may show complete dominance or incomplete dominance. (In reality, it is more like a spectrum between the two polar opposites.)
If a gene pair is completely dominant in the case of spider, an individual needs only inherit one copy of the gene for it to manifest itself in the appearance (geneticists call this phenotype) of the snake. The dominant allele masks the effects of the other normal, or wild-type, allele. In genetic notation we usually represent a dominant allele with a capital letter. We might choose to represent Spider then as big S. In a completely dominant gene pair relationship S would completely mask the effects of the normal or wild-type allele, which we might choose to represent as a lower case s. The normal or wild-type allele in this case acts in a recessive manner.
In complete dominance, the genotype SS (homozygous dominant) would produce a snake that looked the same as a snake with the genotype Ss (the heterozygote). Hence, we can not completely determine the genotype of a snake for dominant allele simply by looking at the snake since SS looks the same as Ss.
Incomplete dominance describes the situation where the appearance of the heterozygote (Aa) is intermediate between the two homozygotes (homozygous dominant AA or homozygous recessive aa)
Pastel Jungles are an example of a snake trait that shows incomplete dominance. Pastel Jungle (P) is co-dominant with the wild-type trait (p). This means that the heterozygote Pp is different in appearance than the homozygous dominant individual (PP). Snake breeders call the dominant homozygote a super. So PP would be Super Pastel Jungle which is more vibrant in color than the pastel jungle individual (Pp).
Some of the terminology that snake breeders use can be confusing so watch out sometimes when people talk about pastels they are talking about cinnamon pastels while other are talking about Pastel Jungles….
Breeders can often combine different co-dominant traits to produce designer morphs…..this interests me immensely as a former geneticist and training science teacher…..
Hope this helps……
Re: Spider morph question
awesome post Mendel's Balls!
Re: Spider morph question
Quote:
Originally Posted by elevatethis
I dont wanna know where it is, who has it, or what it looks like....yes or no...is there in fact a visual homozygous spider?????!
I guess if I had a male spider that I crossed to 10 normal girls every year for 10 years and came up with nothing but spiders...I'd keep it to myself to!
If you cross a homozygous dominant Spider (SS) to a normal, you would expect only Spider. This is no secret!
What I think Adam is talking about is a Spider line where the homozygous dominant form is more pronounced than the heterozygote. If such a line existed, then there would be such a thing as a super spider! This hypothetical line then would have a spider allele that acted in a co-dominant fashion.
This hypothetical situation is entirely possible considering that a gene is a biochemical entity. The mutation that produces a spider allele resides in a sequence of DNA. Another mutation somewhere else in the chemical sequence of the “spider” gene may produce a different spider allele which acts co-dominantly or in snake breeder terms….acts SUPER when the genotype is homozygous dominant (SS)!
I guess the moral of the story is it is important to realize that dominance relationships aren’t completely set in stone…..
Like I said above there is a spectrum between complete dominance and incomplete dominance….
Thanks for the kind words Well_Armed! :)
In other news, my gf (username: amy) and I just got our first BP, he ate for us on Tuesday…Tonight I think we are going to try to weigh him. :cool:
Re: Spider morph question
Quote:
Originally Posted by Adam_Wysocki
That you personally know of. Right? ;)
-adam
Precisely. No one has publicly announced such a thing. I think it'd be pretty cool if someone proved me wrong on that. :P
Re: Spider morph question
Quote:
Originally Posted by Boarder4l154
man..... theres too many secrets in the breeding industry. I wanna be in the know too!
LOL...I don't think Adam was implying that he knows something about this that we don't. (Although I wouldn't put that past him either!) He just likes to pull my chain (or anyone else's) when I make a blanket statement like that and forget to back it up with some sort of disclaimer about my personal ignorance. :P ;)
Re: Spider morph question
Quote:
Originally Posted by Mendel's Balls
If you cross a homozygous dominant Spider (SS) to a normal, you would expect only Spider. This is no secret!
What I think Adam is talking about is a Spider line where the homozygous dominant form is more pronounced than the heterozygote. If such a line existed, then there would be such a thing as a super spider! This hypothetical line then would have a spider allele that acted in a co-dominant fashion.
This hypothetical situation is entirely possible considering that a gene is a biochemical entity. The mutation that produces a spider allele resides in a sequence of DNA. Another mutation somewhere else in the chemical sequence of the “spider” gene may produce a different spider allele which acts co-dominantly or in snake breeder terms….acts SUPER when the genotype is homozygous dominant (SS)!
I guess the moral of the story is it is important to realize that dominance relationships aren’t completely set in stone…..
Like I said above there is a spectrum between complete dominance and incomplete dominance….
Thanks for the kind words Well_Armed! :)
In other news, my gf and I just got our first BP, he ate for us on Tuesday…Tonight I think we are going to try to weigh him. :cool:
Hit the nail on the head basically. That's basic biology too. -Hums.- And I'm going to dive RIGHT into it.
Oh, and goodluck with that. ^_^
Re: Spider morph question
Quote:
Originally Posted by Melicious
Hit the nail on the head basically. That's basic biology too. -Hums.- And I'm going to dive RIGHT into it.
Oh, and goodluck with that. ^_^
As a training science educator I like to see people learning bio.....:partyon:
MY Gf (Username: Amy) has some pics of our snake in her gallery.:snake:
