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Joined 2026-09-21 Message
Incoming links: G. A. Parker
G. A. Parker 2026-11-05
G. A. Parker coauthored a 1972 evolutionary model for the origin of anisogamy, the difference between small and large gametes. The model connected the number of gametes a producer can make with the resources available to a resulting zygote. Producing many small gametes can improve opportunities for fusion, whereas larger gametes can improve provisioning; these pressures need not favor one intermediate size.[ref]
The origin and evolution of gamete dimorphism and the male-female phenomenon by G. A. Parker and others. Journal of Theoretical Biology 36, 529–553, gamete-size model
The contribution made the origin of two gamete-size strategies a problem in natural selection. It explained a possible mechanism under explicit reproductive assumptions, rather than making every observed sex difference a necessary consequence of anisogamy.
Portrait of G. A. Parker
. Identified University of Liverpool faculty portrait; the GAP faculty profile links the gamete-dimorphism research. Source.