Genetic variation in a heterogeneous environment. I. Temporal heterogeneity and the absolute dominance model

P. W. Hedrick

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The conditions for a stable polymorphism and the equilibrium gene frequency in an infinite population are compared when there is spatial or temporal environmental heterogeneity for the absolute dominance model. For temporal variation the conditions for stability are more restrictive and the equilibrium gene frequency is often at a low gene frequency. In a finite population, temporal environmental heterogeneity for the absolute dominance model was found to be quite ineffective in maintaining genetic variation and is often less effective than no selection at all. For comparison, the maximum maintenance for temporal variation is related to the overdominant model. In general, cyclic environmental variation was found to be more effective at maintaining genetic variation than where the environment varies stochastically. The importance of temporal environmental variation and the maintenance of genetic variation is discussed.

Original languageEnglish (US)
Pages (from-to)757-770
Number of pages14
JournalGenetics
Volume78
Issue number2
StatePublished - 1974
Externally publishedYes

Fingerprint

Gene Frequency
Maintenance
Population

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Genetic variation in a heterogeneous environment. I. Temporal heterogeneity and the absolute dominance model. / Hedrick, P. W.

In: Genetics, Vol. 78, No. 2, 1974, p. 757-770.

Research output: Contribution to journalArticle

@article{df32ca9318024228a709b0b326235c07,
title = "Genetic variation in a heterogeneous environment. I. Temporal heterogeneity and the absolute dominance model",
abstract = "The conditions for a stable polymorphism and the equilibrium gene frequency in an infinite population are compared when there is spatial or temporal environmental heterogeneity for the absolute dominance model. For temporal variation the conditions for stability are more restrictive and the equilibrium gene frequency is often at a low gene frequency. In a finite population, temporal environmental heterogeneity for the absolute dominance model was found to be quite ineffective in maintaining genetic variation and is often less effective than no selection at all. For comparison, the maximum maintenance for temporal variation is related to the overdominant model. In general, cyclic environmental variation was found to be more effective at maintaining genetic variation than where the environment varies stochastically. The importance of temporal environmental variation and the maintenance of genetic variation is discussed.",
author = "Hedrick, {P. W.}",
year = "1974",
language = "English (US)",
volume = "78",
pages = "757--770",
journal = "Genetics",
issn = "0016-6731",
publisher = "Genetics Society of America",
number = "2",

}

TY - JOUR

T1 - Genetic variation in a heterogeneous environment. I. Temporal heterogeneity and the absolute dominance model

AU - Hedrick, P. W.

PY - 1974

Y1 - 1974

N2 - The conditions for a stable polymorphism and the equilibrium gene frequency in an infinite population are compared when there is spatial or temporal environmental heterogeneity for the absolute dominance model. For temporal variation the conditions for stability are more restrictive and the equilibrium gene frequency is often at a low gene frequency. In a finite population, temporal environmental heterogeneity for the absolute dominance model was found to be quite ineffective in maintaining genetic variation and is often less effective than no selection at all. For comparison, the maximum maintenance for temporal variation is related to the overdominant model. In general, cyclic environmental variation was found to be more effective at maintaining genetic variation than where the environment varies stochastically. The importance of temporal environmental variation and the maintenance of genetic variation is discussed.

AB - The conditions for a stable polymorphism and the equilibrium gene frequency in an infinite population are compared when there is spatial or temporal environmental heterogeneity for the absolute dominance model. For temporal variation the conditions for stability are more restrictive and the equilibrium gene frequency is often at a low gene frequency. In a finite population, temporal environmental heterogeneity for the absolute dominance model was found to be quite ineffective in maintaining genetic variation and is often less effective than no selection at all. For comparison, the maximum maintenance for temporal variation is related to the overdominant model. In general, cyclic environmental variation was found to be more effective at maintaining genetic variation than where the environment varies stochastically. The importance of temporal environmental variation and the maintenance of genetic variation is discussed.

UR - http://www.scopus.com/inward/record.url?scp=0016333556&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0016333556&partnerID=8YFLogxK

M3 - Article

VL - 78

SP - 757

EP - 770

JO - Genetics

JF - Genetics

SN - 0016-6731

IS - 2

ER -