id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_ykebvkglgfelbo33d2ksp5mlmm	William Wells	Beauty has its cost	2000	2	.pdf	application/pdf	166	37	41	Springer A++ Viewer PublisherInfo PublisherName : BioMed Central PublisherLocation : London PublisherImprintName : BioMed Central Beauty has its cost ArticleInfo ArticleID : 3722 ArticleDOI : 10.1186/gb-spotlight-20000710-03 ArticleCitationID : spotlight-20000710-03 ArticleSequenceNumber : 159 ArticleCategory : Research news ArticleFirstPage : 1 ArticleLastPage : ArticleHistory : RegistrationDate : 2000–07–10 ArticleCopyright : BioMed Central Ltd2000 William Wells Email: wells@biotext.com 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. 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 deleterious alleles are not weeded out. 1. Nature magazine, [http://www.nature.com/nature/] This PDF file was created after publication. http://www.nature.com/nature/	./cache/work_ykebvkglgfelbo33d2ksp5mlmm.pdf	./txt/work_ykebvkglgfelbo33d2ksp5mlmm.txt