The genetic basis and fitness consequences of sperm midpiece size in deer mice 1 2

The remarkable diversity of male reproductive traits observed in nature is often attributed the 2 1 evolutionary forces of sexual conflict, sperm competition, and sperm precedence 1-4. However, the genetic 2 2 mechanisms that enable reproductive traits to respond to changes in selective regime are often unknown. 2 3 Moreover, because most genes expressed in reproductive organs (e.g. testes) are also expressed elsewhere 2 4 peer-reviewed) is the author/funder. All rights reserved. No reuse allowed without permission.