 Although there is a relationship between having a life cycle and reproducing, simply reproducing is not the distinctive feature here, as a number of authors have recognized (Griesemer 2014, Godfrey-Smith 2013, O’Malley 2016, R.A. Wilson 2005). Organisms and perhaps other biological individuals typically reproduce through material overlap (Griesemer 2000), or via bottlenecks requiring material minimalization and mark the transition between generations (Godfrey-Smith 2009: ch.5). These kinds of constraints on biological reproduction go hand in hand with growth and development as part of the intergenerational life cycle of biological individuals. Intergenerational life cycles, in turn, make it possible for biological individuals to form reproductive lineages of living things. Reproduction structures not only such lineages, but also the lineages of non-living biological individuals, whether they be smaller than the individuals they are parts of (such as genes), or groups (such as populations) that feature centrally in discussions of evolutionary individuals.