Title |
Increased rate of hair keratin gene loss in the cetacean lineage
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Published in |
BMC Genomics, October 2014
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DOI | 10.1186/1471-2164-15-869 |
Pubmed ID | |
Authors |
Mariana F Nery, José Ignacio Arroyo, Juan C Opazo |
Abstract |
Hair represents an evolutionary innovation that appeared early on mammalian evolutionary history, and presumably contributed significantly to the rapid radiation of the group. An interesting event in hair evolution has been its secondarily loss in some mammalian groups, such as cetaceans, whose hairless phenotype appears to be an adaptive response to better meet the environmental conditions. To determine whether different repertoire of keratin genes among mammals can potentially explain the phenotypic hair features of different lineages, we characterized the type I and II clusters of alpha keratins from eight mammalian species, including the hairless dolphin and minke whale representing the order Cetacea. |
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