To the Analysis of Random Processes of Isonymy: I. Isonymic Structure

Autor: V. P. Passekov
Rok vydání: 2021
Předmět:
Zdroj: Russian Journal of Genetics. 57:1214-1222
ISSN: 1608-3369
1022-7954
DOI: 10.1134/s1022795421100094
Popis: Regularities of random divergence of the surname composition of a population of limited size, approximately considered in discrete time with non-overlapping generations, are analyzed. It is assumed that the surnames are passed to descendants along patrilineal lines. On a relatively short time interval t/NE(t), where NE(t) is the average harmonic effective population size over t generations, systematic pressures can be neglected. The surname composition of the next generation τ is formally a random sample of Ne(τ)/2 size from the surnames of the male component of the parental population, which is 4 times smaller in size than the number of gametes 2Ne(τ), forming the new generation, and Ne(τ) is the effective population size in generation τ. As a result, the surname microevolution is approximately considered as an analog of the process of random genetic drift, simultaneously occurring in the same population with four times less intensity than for surnames. The role of homozygote concentrations in the analysis of surname structure is played by the probability of a random encounter of an individual with a namesake, while the role of heterozygote concentrations is played by the probability of encounter individuals with different surnames. The results do not imply the surname monophyly and describe a speculative theoretical universe of replica populations supposedly having experienced the microevolutionary history of the population under consideration in the same conditions. The concept of the surname analog of the inbreeding coefficient has been introduced. In fact, it by 4 times exceeds the traditional S. Wright’s inbreeding coefficient. Estimation of the inbreeding coefficient of real subdivided populations gives an idea of statistical correlation of homologous genes of uniting gametes and does not differentiate the situations of mechanical mixture of subpopulations or their common origin. Only when microevolution of real subpopulations with a common root is independent is the inbreeding coefficient directly associated with the gene identity by descent.
Databáze: OpenAIRE
Externí odkaz: