September 2016 in “Princeton University Press eBooks” The document concludes that understanding health requires considering evolutionary perspectives on reproductive fitness, and recognizing the complexity of factors like diet, testosterone, and sexual orientation.
June 2008 in “CRC Press eBooks” PCOS may have evolved as an advantage in past environments with food scarcity.
22 citations,
December 2016 in “PloS one” A specific protein in chicken embryos links early skin layers to feather development.
36 citations,
November 2019 in “Molecular biology and evolution” Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.
5 citations,
January 2022 in “Scientific reports” The research identified two types of keratinocytes in chicken scales: one for hard scales and another for soft skin, with similarities to human skin differentiation.