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Transition from haploidy to diploidy.
Nature. 1991 May 23; 351(6324):315-7.Nat

Abstract

As a direct consequence of sex, organisms undergo a haploid and a diploid stage during their life cycle. Although the relative duration of haploid and diploid phases varies greatly among taxa, the diploid phase is more conspicuous in all higher organisms. Therefore it is widely believed that diploidy offers more evolutionary possibilities and is thus nearly always selected for. We have now performed computer simulations to investigate one possible advantage of diploidy, that is, protection against the expression of deleterious mutations. Instead of comparing isolated haploid and diploid populations, we considered interbreeding haploids and diploids. Diploids invaded the population only when the dominance degree of a single deleterious mutation was smaller than about 1/2, and the condition allowing diploidy to invade depended on how harmful the mutation was.

Authors+Show Affiliations

Perrot V
Laboratoire de Génétique et Evolution des Populations Végétales, URA CNRS, Villeneuve d'Ascq, France.
Richerd S
No affiliation info available
Valéro M
No affiliation info available

MeSH

AllelesBiological EvolutionDiploidyGenes, DominantGenetics, PopulationGenotypeHaploidyModels, GeneticMutationSelection, Genetic

Pub Type(s)

Journal Article

Language

eng

PubMed ID

2034274

Citation

Perrot, V, et al. "Transition From Haploidy to Diploidy." Nature, vol. 351, no. 6324, 1991, pp. 315-7.
Perrot V, Richerd S, Valéro M. Transition from haploidy to diploidy. Nature. 1991;351(6324):315-7.
Perrot, V., Richerd, S., & Valéro, M. (1991). Transition from haploidy to diploidy. Nature, 351(6324), 315-7.
Perrot V, Richerd S, Valéro M. Transition From Haploidy to Diploidy. Nature. 1991 May 23;351(6324):315-7. PubMed PMID: 2034274.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Transition from haploidy to diploidy. AU - Perrot,V, AU - Richerd,S, AU - Valéro,M, PY - 1991/5/23/pubmed PY - 1991/5/23/medline PY - 1991/5/23/entrez SP - 315 EP - 7 JF - Nature JO - Nature VL - 351 IS - 6324 N2 - As a direct consequence of sex, organisms undergo a haploid and a diploid stage during their life cycle. Although the relative duration of haploid and diploid phases varies greatly among taxa, the diploid phase is more conspicuous in all higher organisms. Therefore it is widely believed that diploidy offers more evolutionary possibilities and is thus nearly always selected for. We have now performed computer simulations to investigate one possible advantage of diploidy, that is, protection against the expression of deleterious mutations. Instead of comparing isolated haploid and diploid populations, we considered interbreeding haploids and diploids. Diploids invaded the population only when the dominance degree of a single deleterious mutation was smaller than about 1/2, and the condition allowing diploidy to invade depended on how harmful the mutation was. SN - 0028-0836 UR - https://www.unboundmedicine.com/medline/citation/2034274/Transition_from_haploidy_to_diploidy_ DB - PRIME DP - Unbound Medicine ER -