[PDF] Top 20 TOWARDS A GENETIC THEORY FOR THE EVOLUTION OF THE SEX RATIO

... For the purpose of examining the significance to sex-ratio evolution of the concept of reproductive investment and the sex-ratio strategy arguments, we have formulated a ge[r] ... See full document

... each sex, regardless of plain the absence of suppressors in ...the genetic system remains to be shown what happens when fitness config- generates excess of one sex (as does the ... See full document

... population sex investm ent ratio o f ...preferred sex investment ratios o f workers also ...preferred sex investment ratio also remains ...Hare's theory is that these changes in ... See full document

... and genetic study: The stocks used were previously for the Nrg, otd, otu, and rdgA genes are shown in Table ...reference genetic background free of dis- tions 654–1350 of GeneBank accession ...a ... See full document

... is the involvement of other loci in the genome, as enhancers of suppressor action. Our data indicate that the genomic region in question is necessary for male survival, but do not rule out involvement of other loci in ... See full document

... Correlation and regression analyses indicate that isofemale strains extracted from a population of the parasitic wasp, Nasonia vitripennis, differ in the fit of their [r] ... See full document

... LMC theory (Walker, 1967; Wylie, 1965; Velthius et ...LMC theory predicts sex ratio based on the number of females ovipositing in a ... See full document

... to sex ratio theory: questions about the effects of mating stucture are very common, and the comparative data confirm the importance of local mate competition as an important factor in the ... See full document

... The genetic basis of sex ratio is of prime importance if we want to understand sex ratio ...the genetic basis of sex ratio in ...the genetic basis of ... See full document

... control sex ratio at conception and suggests that this trait differs from most metrical traits in its underlying genetic ...the sex ratio is hardly susceptible to modification by ... See full document

... the evolution of dimorphism in recombination combination dimorphism on autosomes is also com- have received much less attention, especially with re- ...one sex spect to formal ...the evolution of re- ... See full document

... The sex-ratio at the height of the breeding season is thus significantly lower than later, and this result is quite in keeping with the experimental and statistical work which has been c[r] ... See full document

... tests so that the numbers of males and females in the counties were estimated by the total number of live births and by published regional SRs, both given by Berg [7]. Significant regional differences in the sex ... See full document

... detecting sex-specific loci is likely to be a methodological challenge, in part because it is in essence an interaction effect, which usually requires larger sam- ple sizes to achieve sufficient statistical power ... See full document

... developmental program will be lost automatically. In fact, rapid loss of morphological structures by loss-of-function mutations in a single regulatory gene has been docu- mented in several cases (McGregor et al. 2007; ... See full document

... The main cause is a recessive gene or genes on the third chromosome which produces the deviant sex ratio only when present in the male parent.. DEVIANT SEX RATIO 605[r] ... See full document

... The temperature-sensitive stage, however, is apparently the primary spermatocyte rather than the spermatid, suggesting a primary action of the sex ratio gene before meiosis and a n[r] ... See full document

... Such variation was also found to occur in the data for 1921-2 all litters but in this latter case the biggest average size of litter was found in the July-September quarter and the lowes[r] ... See full document

... Mendalian sex ratio as a population proportion): We calculated the Z-value (Z-test based on the proportion of male and female) based on above formula and analyzed the result at three confidence levels (90%, ... See full document

... the sex chromosomes o f these species using fluorescent in situ hybridisation ...no sex specific repeats can be identified, but the W o f representative elapid snakes is composed almost entirely o f ... See full document