RANDOM MATING WITH THE EXCEPTION OF SISTER BY BROTHER MATING

A gene-culture coevolutionary model for brother-sister mating.

We present a gene-culture coevolutionary model for brother-sister mating in the human. It is shown that cultural--as opposed to innate--determination of mate preference may evolve, provided the inbreeding depression is sufficiently high. At this coevolutionary equilibrium, sib mating is avoided because of cultural pressures.

A gene–culture coevolutionary model for brother–sister mating (incest tabooynorm of reactionyevolutionarily stable strategiesycultural transmissionyinbreeding depression)

We present a gene–culture coevolutionary model for brother–sister mating in the human. It is shown that cultural—as opposed to innate—determination of mate preference may evolve, provided the inbreeding depression is sufficiently high. At this coevolutionary equilibrium, sib mating is avoided because of cultural pressures. Westermarck (1) proposed that ‘‘there is an innate aversion to sexual in...

Dynamics of the Multiple Choice Genetic Algorithm with Random Mating

Is Evolution of Mating Preferences Inevitable? Random Mating in the Multisex System of Tetrahymena thermophila

Ciliate mating systems are highly diversified, providing unique opportunities to study sexual differentiation and its implications for mating dynamics. Many species of ciliates have multiple (>2) sexes. More sexes may mean more choice and an opportunity for evolution of preferential mating. We asked if the multiple sexes of the ciliate Tetrahymena thermophila mate preferentially among each othe...

On Asymptotics of a Population Model with Random Mating

This paper deals with a model for an age-sex structured population consisting of male, single and fertilized female subclasses taking into account a random coupling of sexes (for a period of mating only) and females' pregnancy. For certain forms of the demographic rates there are presented separable solutions, and the asymptotic behaviour of the general solution is demonstrated.