selection versus evolution

Shuker DM 2010 Sexual selection: endless forms or tangled bank? Anim Behav 79:e11-e17.

• statistical descriptions of genetic change derived from the breeder's equation partition 'selection' from 'heredity'
• i.e. separating selection from genetics
• natural or sexual selection (measured or modelled as selection differentials or gradients) is then no longer synonymous with 'evolution by natural/sexual selection'
• selection can occur but there will not be genetic change unless there is heritable variation for the trait