منابع مشابه
Marginal overdominance in Drosophila.
A reanalysis of Drosophila viability data was undertaken to determine the role of genotype-environment interactions in the maintenance of polymorphism. Between-replicate variances of viabilities in chromosomal homozygotes and heterozygotes with the same mean fitnesses were compared, with the expectation that if the heterozygote variance were on the average greater, conditional overdominance wou...
متن کاملExperimental observation of overdominance ( heterozygous advantage ) in Drosophila
Natural selection is usually assumed to increase the frequency of an advantageous allele or to decrease the frequency of a deleterious allele over time. There are mechanisms that can maintain genetic variation over time, such as cycling environments that favor one allele for a time and then the other and frequency dependent selection, where rare alleles are selected over the more common allele ...
متن کاملBehavioral Cost & Overdominance in Anopheles gambiae
In response to the widespread use of control strategies such as Insecticide Treated Nets (ITN), Anopheles mosquitoes have evolved various resistance mechanisms. Kdr is a mutation that provides physiological resistance to the pyrethroid insecticides family (PYR). In the present study, we investigated the effect of the Kdr mutation on the ability of female An. gambiae to locate and penetrate a 1c...
متن کاملMarginal Homozygosity for Gene Arrangement in Drosophila robusta.
Marginal Homozygosity for Gene Arrangement in Drosophila robusta: H. L. Carson ..................................................... 630 Influence of White Blood Cells on Lysis of Red Cells by Cobra Venom: J. C. Turner . .................................................... 631 Nonspecificity of ATP-Contraction of Living Muscle: G. Falk .. 632 High Incidence Blood Group Found in Venezuelan India...
متن کاملConditional overdominance at an alcohol dehydrogenase locus in yeast.
Documented examples of heterosis attributable to overdominance at specific protein-encoding gene loci have rarely been reported, the association of sickle cell hemoglobin with malarial resistance being the best documented example of this phenomenon. Here we report an example of overdominance that is temperature- and allyl alcohol-dependent and due to heterozygosity at the ADH1 locus, involving ...
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ژورنال
عنوان ژورنال: Genetics
سال: 1975
ISSN: 1943-2631
DOI: 10.1093/genetics/81.1.177