Under random mating, a progeny's alleles are independently sampled from the parental gene pools. Here is a new proof which avoids the usual algebraic complexity, based on a restated Mendel's First Law. Another simplified proof along the old approach led to the discovery that allelic independence can hold under random mating and fertility selection. The theoretical existence and number of such s...

In a panmictic population of constant size N, random pairs individuals will have most recent shared ancestor who lived slightly more than 0.5 log2N generations previously, on average. The probability that pair share at least one ago, or recently, is about 50%. Those individuals, if they do an from generation, would be cousins degree (0.5 log2N) - 1. Shared ancestry progressively earlier increas...

Traditional Genetic Algorithms (GAs) mating schemes select individuals for crossover independently of their genotypic or phenotypic similarities. In Nature, this behaviour is known as random mating. However, non-random schemes − in which individuals mate according to their kinship or likeness − are more common in natural systems. Previous studies indicate that, when applied to GAs, negative ass...

We consider mathematical models describing the evolutionary consequences of antagonistic interactions between male offence, male defence and female reproductive tract and physiology in controlling female mating rate. Overall, the models support previous verbal arguments about the possibility of continuous coevolutionary chase between the sexes driven by two-way (e.g. between male offence and fe...

a determination of the genetic variation of the fungus isolated from graminous weeds which is highly beneficial to know probable genetic recombination in the fungus populations was done for the first time in iran through pcr reaction. the isolates of fungus “magnaporthe grisea” from graminous weed hosts and from rice were analyzed through rapd-pcr to assay the mating type and genetic diversity....

1. The selection equation 1.1 Random mating with direct selection For either a single or multiple locus system with N female genotypes and M male genotypes, let xi and yj (i=1,...,N, j=1,...,M) be respectively the female and male genotype proportions in the population. We assume that the phenotypic expression of the GFMH affects the fitness of carriers, viewed either as mating success (i.e., th...

We combined mark-and-recapture studies with genetic techniques of parentage assignment to evaluate the interactions between mating, dispersal, and inbreeding, in a free-ranging population of Crocidura russula. We found a pattern of limited and female-biased dispersal, followed by random mating within individual neighborhoods. This results in significant inbreeding at the population level: matin...