African cichlid fish are beautiful, easy to breed, and many different speices can be ordered on Ebay. In one speices, Metriaclima gigantus, the wild type has dark body coloration with light blue stripes (sec photo). You have two different single gene mutants of Metriaclima gigantus where one mutant has a dark body with no stripes and the other has a light body with blue stripes. You cross those two mutants and obtain 48 of spring with the following phenotypes:

what does this finding tell you about the underlying molecular biology of the pigmetation phenotype in M. gigantus?

27 wild type fish

9 with dark bodies and no stripes antus?

9 with light bodies and blue stripes

3 with light bodies and no stripes

What does this finding tell you about the underlying molecular biology of the pigmentation phenotype on M giganfus? 7 Another spelces of African cichild. Labeotropheus trenavasae, normally has a yellow body In your colonies of L trcwavasac you discover two single gene mutants that each have white bodies. Again, you cross these two mutants and obtain 64 of spnnq with the folloyang phenotypes: 36 wild type fish

28 fish with white bodies How does the underlying molecular biology of pogmetation differ between L trewavasae and M. gvantus?

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