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BMC Biology

, 12:104

First Online: 31 December 2014DOI: 10.1186-s12915-014-0104-2

Cite this article as: Haig, D. BMC Biol 2014 12: 104. doi:10.1186-s12915-014-0104-2


Variation in body composition is a popular obsession. The culturally ‘ideal’ body type is light on fat and heavy on muscle but the human population is collectively laying on fat. A new study finds antagonistic effects of two imprinted genes, Grb10 and Dlk1, on body composition in mice. These findings pose the question whether there is an evolutionary conflict between genes of maternal and paternal origin over the optimal proportions of body fat and lean muscle mass.

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Autor: David Haig


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