they both carry the gene and produce about 40% electric blue fry in a spawn.
Blue Gene Jack Dempsey Breeding Pair
- Thread starter bluestarflowerfish
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realmonsters;2813951; said:
Yes you can. Both parent fish, if their both ebjds, have the genes (unless their genetically deformed). So the genes get passed down to the offspring and therefore are more "pure" in their electric blue gene. If you think about it, you realize that I' right.
I tried writing something to explain this but it's too hard, people won't get it.
Just picture set theory in your mind and you will understand.
Just use set theory to picture what would happen if two interacial people had kids. Or two mutt dogs (must come from the same kind of breeds like rottweiler x doberman, or cane corso x mastiff or yorkshire terrier x silky terrier).
lol
fobrinkle;2813839; said:
Exactly. The fry are the answer. The parents need to carry the blue gene. Or otherwise he wouldn't get those fry. If the parent fish didn't have the genes, then the offspring would be normal jds. Same thing with jd x blue gene jd, you would get regular jds, with a possibility being that very few of them will have the blue gene.
Also, he could have mated or someone he knows could have mated some jds and got those blue gene jds. He could know that then.
And final thing, the blue gene jds just have a particular look. When you see a lot of them you will be able to tell.
SOKO;2814086; said:
You my friend know absolutely nothing about genetics, let alone EBJD genetics.
It's simple Mendelian genetics, both of these fish are heterozygous (Aa) and hence carry the recessive trait so the produce normal fish (AA), blue gene jacks (Aa), and EBJD's (aa).
Though 40% is a huge amount of EBJD's, theoretically the ratio would be 75% looking normal (1/3rd of these AA, 2/3rds Aa) and 25% EBJD.
It is impossible to distinguish between normal Jacks and those that carry the recessive trait. That's why it's called recessive! It needs two alleles to show up in the phenotype.
Hopefully that clears it up a bit, as people seemed confused.
Modest_Man;2814375; said:
I neither claimed nor said that I know anything about genetics. I just used simple set theory and probability/statistics to explain what I was trying to get to. I'm not a biologist. I just used rational thinking and mathematics.
Though I agree that it's almost impossible to distinguish between a normal jd and a blue gene jd, just by looking at them. For me, blue gene jds just have a specific look about them. And, I believe that there are two scientific tests to find out whether it's really a blue gene jd. One way is to compare traits and characterists of this blue gene jd to other known blue gene jds. And the second way is the dna test.
But yeh, what I was trying to explain, you explained better.
Oops, I'm not a biologist. Sorry about that people.
unfortunately without dna testing it is impossible to compare a jd and blue gene carrying jd...they are exactly the same phonetipically but obviously different genotypically...in this case fish that express the recessive gene will not survive while fish that are recessive dominant express the electric blue coloration hence being an electric blue jack dempsey
74ray;2814594; said:
they spawned about 2 weeks ago. as you said huge amount of fry! But I now need to free up some space due to having to move and I don't want to risk such a nice investment. I hope I can find a good home for them in time before we move.
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