phantomchameleon
Established Member
Might as well share what i learn about lizard genetics while we're in this unit and log everything.
Common reptilian genetics knowledge seems to not exceed past punnet squares and basic repressive-dominant trait understanding. Most of that stems just from... we don't know enough about them and can't test them properly. Reptiles don't even really have a set in stone way for determining sex. Temperature dependent sex determination is actually really interesting.
The species that rely upon temperature for their sex determination do not have the SRY(Sex-determining region Y) gene. They instead have some other genes such as DAX1, DMRT1, and SOX9 that are expressed or not expressed depending on the temperature! Alligators and some geckos are this way. A more complicated example would be an Australian skink. Their initial sex is determined by chromosomes but temperature of incubation can combat that.
Funny thing is we don't actually know where this sex determining system evolved from for certain.
Chameleons are a complete other story when it comes to reptile genetics. Studies confirmed that they were not relying on temperature sex determination. Both the ZW and XY systems have been used for reptiles but we dont know what exactly to use when it comes to chameleons.
I know everyone hates it when i bring Slurpy into conversations and this will be a doozy for you all but, yknow, education.
Slurpy has only some parts of the female sex organ. They have ovums so they can technically lay eggs but I have no idea if they will be able to actually push out the eggs but they'll probably have to be surgically removed. They will never be fertile though. They do have testis and a hemipenis. They're a little bit chub in the back end just from feel, i guess that's just from everything being shoved into a tiny body. They have smaller spurs and they have vibrant coloration like males when females usually dont show very much variation with colors. Most of the times he's just green with very slightly darker stripes. Everything else is kinda female when it comes to outside appearance.
We dont exactly know what's wrong with him or what happened to him during the federalization process to be this way. If chameleons do use the ZW system, he may be a WW but that's EXTREMELY unlikely as WW's never come to term.
That's all i feel like writing about for now, this is very basic stuff so it's good to start out with
Common reptilian genetics knowledge seems to not exceed past punnet squares and basic repressive-dominant trait understanding. Most of that stems just from... we don't know enough about them and can't test them properly. Reptiles don't even really have a set in stone way for determining sex. Temperature dependent sex determination is actually really interesting.
The species that rely upon temperature for their sex determination do not have the SRY(Sex-determining region Y) gene. They instead have some other genes such as DAX1, DMRT1, and SOX9 that are expressed or not expressed depending on the temperature! Alligators and some geckos are this way. A more complicated example would be an Australian skink. Their initial sex is determined by chromosomes but temperature of incubation can combat that.
Funny thing is we don't actually know where this sex determining system evolved from for certain.
Chameleons are a complete other story when it comes to reptile genetics. Studies confirmed that they were not relying on temperature sex determination. Both the ZW and XY systems have been used for reptiles but we dont know what exactly to use when it comes to chameleons.
I know everyone hates it when i bring Slurpy into conversations and this will be a doozy for you all but, yknow, education.
Slurpy has only some parts of the female sex organ. They have ovums so they can technically lay eggs but I have no idea if they will be able to actually push out the eggs but they'll probably have to be surgically removed. They will never be fertile though. They do have testis and a hemipenis. They're a little bit chub in the back end just from feel, i guess that's just from everything being shoved into a tiny body. They have smaller spurs and they have vibrant coloration like males when females usually dont show very much variation with colors. Most of the times he's just green with very slightly darker stripes. Everything else is kinda female when it comes to outside appearance.
We dont exactly know what's wrong with him or what happened to him during the federalization process to be this way. If chameleons do use the ZW system, he may be a WW but that's EXTREMELY unlikely as WW's never come to term.
That's all i feel like writing about for now, this is very basic stuff so it's good to start out with