Geographic variation in offspring size and other phenotypes can be viewed as an adaptive response to local environmental conditions,but the causes of such variation remain unclear.
Sexual selection favoring large males could be balanced by fecundity selection favoring large females,leading to the evolution of sexual size monomorphism.
Sexual selection is critical to both reproduction and evolution.The effects of male-male competition and female choice regarding body size have been examined in a large number of taxa,including toad s
Females are routinely choosier than males in mate choice in many taxa.Several hypotheses were considered to explain genetic benefits behind female strategies.The inbreeding avoidance hypothesis and ou