The impact of shared ancestral variation on hybrid male lethality--a 16 codon indel in the Drosophila simulans Lhr gene.
J Evol Biol
; 21(2): 551-5, 2008 Mar.
Article
en En
| MEDLINE
| ID: mdl-18194231
ABSTRACT
The Lethal hybrid rescue (Lhr) gene causes hybrid male lethality in crosses between Drosophila simulans and D. melanogaster. Lhr(2) is a D. simulans allele, which rescues hybrid males. It has been recently proposed that a 16 codon insertion, which distinguishes the D. melanogaster and the canonical D. simulans allele, and is lacking in Lhr(2), may be responsible for the functional divergence of D. melanogaster and D. simulans Lhr alleles. Here, we show that the Lhr(2) allele lacking the insertion represents an ancestral polymorphism segregating at a moderate frequency in D. simulans. Crosses of D. melanogaster females to males from two D. simulans strains carrying this deletion showed a severe deficiency of viable hybrid males. Our results suggest that the absence of this insertion alone is not sufficient to explain functional differences between D. melanogaster and D. simulans Lhr alleles.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Polimorfismo Genético
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Genes de Insecto
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Drosophila
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Especiación Genética
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Genes Letales
Límite:
Animals
Idioma:
En
Revista:
J Evol Biol
Asunto de la revista:
BIOLOGIA
Año:
2008
Tipo del documento:
Article
País de afiliación:
Austria
Pais de publicación:
CH
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SUIZA
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SUÍÇA
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SWITZERLAND