Genetics Questions

[Elise]

Hey All,

In the future I would like to breed plakats or maybe halfmoon rosetails. So I'm doing a lot of color/ pattern researching.

I can't find this answer anywhere... if I breed a metallic plakat to a metallic green plakat, I will get some ________ colored plakats?

Also, is the HM trait dominant or recessive?

Also, the marble trait, dominant or recessive?


Thanks Guys

 

[Kiarra]

Without knowing the genetic history of the fish in question, there is no way to determine color possibilities in the fry.

I do know that HM is controlled NOT by one specific set of alleles. It is not a question of dominant or recessive. If it were, then a cross of HM x HM would result in ALL HM...but it doesn't. It usually ends up with a bunch of Deltas and Super Deltas. It is a trait controlled by several sets of alleles, and therefore is much harder to predict.

 

[Synirr]

Kiarra's right about HM... it's a quantitative trait and also has a lot to do with environmental factors as well, such as what the fish is fed as a fry. It's basically a delta tail who was taken exceptional care of and has a lot of branching
Breeding two HM fish who have great branching together gives you the best chance for HM fry.

I'm pretty sure the marble trait is recessive.

Here are a couple of great sites on betta genetics, incase you haven't seen them already :
http/watershed3.tripod.com/types.html

http/www.bettas-jimsonnier.com/genetics.htm

 

[xanthianacid]

There is one thing I know about marbling! It is the only true mutation that will never be found in nature.

Genetics can't be certain unless you have knowledge of at least three generations back and then its a certain matter of guess work even then. And genetic sciences are not perfect by any means, on a general level!!

Good luck with your research!

 

[Elise]

lol, thanks! Yeah, theres a lot to know.

 

[Synirr]

[...]
Genetics can't be certain unless you have knowledge of at least three generations back[...]

Unless the trait in question is recessive... then it's certain with a small margin of error to account for mutation
Basically, if marbling is recessive like I think it is, breeding marbles to marbles will give you marbles, though the degree of marbling varies from fish to fish (meaning some could be almost entirely white, or some could be almost entirely another colour, but they are technically marbles)