Logo of geneticsGeneticsCurrent IssueInformation for AuthorsEditorial BoardSubscribeSubmit a Manuscript
Genetics. 1995 Feb; 139(2): 1007–1011.
PMCID: PMC1206352

On the Effective Size of Populations with Separate Sexes, with Particular Reference to Sex-Linked Genes


Inconsistencies between equations for the effective population size of populations with separate sexes obtained by two different approaches are explained. One approach, which is the most common in the literature, is based on the assumption that the sex of the progeny cannot be identified. The second approach incorporates identification of the sexes of both parents and offspring. The approaches lead to identical expressions for effective size under some situations, such as Poisson distributions of offspring numbers. In general, however, the first approach gives incorrect answers, which become particularly severe for sex-linked genes, because then only numbers of daughters of males are relevant. Predictions of the effective size for sex-linked genes are illustrated for different systems of mating.

Full Text

The Full Text of this article is available as a PDF (405K).

Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • CROW JF, ROBERTS WC. Inbreeding and homozygosis in bees. Genetics. 1950 Nov;35(6):612–621. [PMC free article] [PubMed]
  • Hill WG. A note on effective population size with overlapping generations. Genetics. 1979 May;92(1):317–322. [PMC free article] [PubMed]
  • Pollak E. The effective population size of an age-structured population with a sex-linked locus. Math Biosci. 1990 Sep;101(1):121–130. [PubMed]

Articles from Genetics are provided here courtesy of Genetics Society of America


Related citations in PubMed

See reviews...See all...

Cited by other articles in PMC

See all...


  • PubMed
    PubMed citations for these articles

Recent Activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...