jas Posted October 11, 2009 Report Share Posted October 11, 2009 Had my second pair of albino kribs spawn a while back When my first pair spawned, all the fry were predictably albino too With the second pair about a third of the fry seem to be colouring up as normal kribs. They're coming up 10mm now. I'm no expert, but isn't the albino gene recessive and therefore 2 albino parents should't be able to have normal kids???? Just wondering if anyone knows more about this than I do... Quote Link to comment Share on other sites More sharing options...
livingart Posted October 11, 2009 Report Share Posted October 11, 2009 http://en.wikipedia.org/wiki/Dominance_(genetics) Quote Link to comment Share on other sites More sharing options...
phoenix44 Posted October 11, 2009 Report Share Posted October 11, 2009 yep. just cause the parents are albino, does not mean the kids have to be. many (most) fishkeepers make assumptions on the genotype because of the phenotype (appearance) incorrectly so. it is impossible to know what is going on without dna testing. Quote Link to comment Share on other sites More sharing options...
jas Posted October 11, 2009 Author Report Share Posted October 11, 2009 Interesting, according to the link here: http://www.thekrib.com/Apisto/P-pulcher.html#13 albinism is an incomplete dominant trait, homozygous dominant and Heterozygous fish look different as do the homozygous recessive I take it this means I have 2 heterozygote fish breeding?? Haven't done genetics since school and only remember basic dominant recessice stuff. Guess you learn something everyday, now to breed enough fish that I can see the differences for myself! Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted October 11, 2009 Report Share Posted October 11, 2009 I bred the albinos a number of times and like you there was always a small percentage of normals to my surprise. I thought about 10% which seemed an unexpected %. Quote Link to comment Share on other sites More sharing options...
Ira Posted October 11, 2009 Report Share Posted October 11, 2009 It's clearly more complicated than just a simple dominant recessive textbook case. Anyway, normal color kribs look better. Quote Link to comment Share on other sites More sharing options...
Cricketman Posted October 11, 2009 Report Share Posted October 11, 2009 The other thing is that as far as genetic metabolic pathways go, many genes can be responsible for one feature. thereby if one gene is missing out of the pathway, the feature may not be expressed. what it may mean is that your parents have 2 seperate parts of the pathway that in each is incomplete, but in some of the offspring it IS complete. just another way that Genetics is AMAZING Quote Link to comment Share on other sites More sharing options...
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