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Beauty has its cost

William Wells

Genome Biology 2000, 1:spotlight-20000710-03  doi:10.1186/gb-spotlight-20000710-03

The electronic version of this article is the complete one and can be found online at:

Published:10 July 2000

© 2000 BioMed Central Ltd

Research news

Brooks reports in the 6 July Nature that male guppies that are sexually more attractive are also evolutionarily less fit (Nature 2000, 406:67-70). This may reflect negative pleiotropic effects of genes for attractiveness, such as the energetic cost of creating large amounts of pigments. Alternatively, deleterious alleles may be hitching a ride in the region of the Y chromosome that has attractiveness genes such as those for color patterns. The increased attractiveness of the male fish ensure the chromosome's genetic survival, but suppression of recombination on the Y chromosome means that the deleterious alleles are not weeded out.


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    Nature magazine