title: The origin of two sexes through optimization of recombination entropy against time and energy.
abstract: Sexual reproduction in nature requires two sexes, which raises the question why the reproductive scheme did not evolve to have three or more sexes. Here we construct a constrained optimization model based on the communication theory to analyze trade-offs among reproductive schemes with arbitrary number of sexes. More sexes on one hand lead to higher reproductive diversity, but on the other hand incur greater cost in time and energy for reproductive success. Our model shows that the two-sexes reproduction scheme maximizes the recombination entropy-to-cost ratio, and hence is the optimal solution to the problem.
authors: Department of Mathematics, University of Nebraska-Lincoln, Lincoln, NE 68588, USA. bdeng1@math.unl.edu
authors: Bo
authors: B
authors: Deng
mesh_terms: D000818:Animals; D005075:Biological Evolution; D004261:DNA Replication; D019277:Entropy; D005260:Female; D008297:Male; D008433:Mathematics; D008954:Models, Biological; D010298:Parity; D011247:Pregnancy; D011995:Recombination, Genetic; D012098:Reproduction / Q000235:genetics* / Q000502:physiology*; D012727:Sex Characteristics; D013997:Time Factors