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tank
Mon Oct 24, 2005, 02:03 PM
Just wondering what the deal is with the possibilities in cross-breeding. Are the genes co-dominant, if so, does anyone know what percentages are for phenotypes?

Stuart
Mon Oct 24, 2005, 03:28 PM
lol Scientific questions :)

What traits are you interested in? Some are co-dominant some are recessives. Do you have a specific interest?

tank
Tue Oct 25, 2005, 11:57 AM
Well, for instance, i'm interested in knowing whether solid colour is dominant over striped, and whether a F1 x F1 cross in albinos would produce albanism in future generations.
Also, stupid question, but which is more dominant - red or blue?

Stuart
Tue Oct 25, 2005, 03:27 PM
Well - geneticist I may be but I don't know much about discus :)

Albinism, however, is a double-recessive character. All progeny of two albinos will be albinos. Progeny of a wild-type and an albino will be wild-type to look at (phenotype) but will be carriers of the gene which may be passed on to future generations.

nag
Tue Oct 25, 2005, 04:32 PM
Hi Tank:

Here's (http://www.indianaquariumhobbyist.com/community/modules.php?name=News&file=article&sid=92&mode=&order=0&thold=0) an article which a friend of mine has written...
Read it to know all about Fish Genetics...
Enjoy... :)

Stuart
Tue Oct 25, 2005, 07:17 PM
Very comprehensive for general genetics that :)

tank
Wed Oct 26, 2005, 12:40 AM
Thanks Stuart and nag