Ilpo Huhtaniemi
It is well established in various experimental models that luteinizing hormone (LH) stimulated testosterone (T) production of Leydig cells is the key endocrine stimulus of spermatogenesis. The role of the other gonadotrophin, follicle-stimulating hormone (FSH), is as yet somewhat unclear given that several clinical conditions …
Ze’ev Hochberg, Alan R Templeton
Evolutionary pressures due to variation in climate play an important role in shaping phenotypic variation among and within species and have been shown to influence variation in phenotypes such as body shape and size among humans. Here we review the evidence for migration and change of living latitude in the evolution of skin color genes and the vitamin D receptor (VDR) ..