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Beauty has its cost
Genome Biology volume 1, Article number: spotlight-20000710-03 (2000)
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.
References
Nature magazine, [http://www.nature.com/nature/]
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Wells, W. Beauty has its cost. Genome Biol 1, spotlight-20000710-03 (2000). https://doi.org/10.1186/gb-spotlight-20000710-03
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DOI: https://doi.org/10.1186/gb-spotlight-20000710-03
Keywords
- Pleiotropic Effect
- Color Pattern
- Energetic Cost
- Genetic Survival
- Male Fish