The Journal of Heredity 2002:93(4)
© 2002 The American Genetic Association 93:285-286
Brief Communication |
Caudal Spotting in the Beacon Fish (Hemigrammus ocellifer Characidae)
From the Department of Biology, Howard University, Washington, DC 20059.
Address correspondence to Jack S. Frankel at the address above, or e-mail: jfrankel{at}howard.edu.
The beacon fish (Hemigrammus ocellifer) exhibits two phenotypes associated with spotting at the base of the caudal fin, with fish either possessing (H. o. ocellifer) or lacking (H. o. falsus) a prominent red spot in this region. Segregation patterns observed from the progenies of 15 different crosses support a hypothesis that caudal spotting in this species is controlled by a single gene with two alleles, for which the caudal spotting allele is completely dominant.
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