sex ratio
Sex ratio conflict and worker production in eusocial hymenotera
... lation-wide sex-investment ratio is very close to the work- ers’ optimum (Sundstro¨m 1994; Sundstro¨m et ...the sex to which workers are more related com- pared to the population average, as ...
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Sex Ratio: Trends and Patterns at World Level
... female fetuses are selectively aborted after pre-natal determination using sophisticated technologies, thus avoiding the unwanted birth of the girl child. Although law is there to prevent it but illegal practices are ...
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Evolution of Autosomal Suppression of the Sex-Ratio Trait in Drosophila
... of sex- Vaz, unpublished data). At least two factors seem to be ratio in SR-bearing populations can be explained by mei- responsible for the stabilization of SR/ST polymor- otic drive theory: any Y-linked ...
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Imbalanced Sex Ratio in Haryana: Rural and Urban Dimensions
... lowest sex ratio in the country with number of 879 female per 1000 male which shows that unfortunately the prevalence patriarchal position and strong son preference over daughters is still dominating the ...
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SEX RATIO: THREAT TO FAMILY INSTITUTION IN NORTH INDIA
... In the contemporary times, the problem of declining sex ratio has been observed in the state of Haryana and Punjab. The female foeticide has been declared by legislation a crime. Despite preventive ...
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The Decline of Child Sex Ratio in Haryana: An Overview
... the sex ratio of 940 females per 1000 ...with sex ratio of ...highest sex ratio are Mewat (906) followed by Fatehabad (903), Rewari(898), Sirsa (896) and Mahendragarh ...lowest ...
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A SEX RATIO FACTOR IN THE HOUSE MOUSE THAT IS TRANSMITTED BY THE MALE
... The 147 mice in 21 mixed litters are too few to permit drawing of definitive conclusions, but the indications are that (a) the sex ratio follows the male as in single litters or [r] ...
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The Scenario of Female Literacy & Sex Ratio in Haryana
... The analysis of the above data indicates that according to the census of 2001 total population of Haryana were 21144564, in which total females were 9780611 and the sex ratio of the state was 861. Now ...
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Dynamics of sex ratio and female unmatedness under haplodiploidy
... the sex ratio, but reduces its ...mated-female sex allocation (e) – I have expressed the latter in terms of the former, so that the model is solely governed by the male-fecundity (k) ...the ...
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DECLINING SEX RATIO IN INDIA : TRENDS AND CORRECTIVE MEASURES
... Child Sex Ratio (0-6 years) has declined from 927 to 914 in ...Child Sex Ratio is 902 as compared to 919 in rural areas. The sex ratio of population of age 7 years and above ...
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The Effect of Polygyny on the Sex Ratio of Mice (Mus Musculus)
... Two series of polygynous matings in mice produced a total of 3430 young, fc females and 1627 males, giving a sex ratio of 90-23 : ioo which does not er significantly from that of the ave[r] ...
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A RELATIONSHIP BETWEEN SEX RATIO AND PATERNAL AGE IN DROSOPHILA
... Evidence will be presented indicating that the aging of nonirradiated Dro- sophila males produces a shift in sex ratio in the same direction as that noted in man (i.e., tow[r] ...
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Modifier Genes of the Sex Ratio Trait in Drosophila pseudoobscura
... The msr trait of Drosophila pseudoobscura occurs when “sex-ratio” males produce a very high frequency of null-X sperm which give rise to sterile male ( X / O ) progen[r] ...
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Glimpses at the History of Sex Ratio Studies
... In a long series of papers, attempts have been made to identify factors influencing the secondary sex ratio (SR). Hawley [15] stated that where prenatal losses are low, as in the high standard of living in ...
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Analysing sex ratio variables in Nepal
... In some reptiles (for example the turtle) and birds (for example Alectura lathami) incubation temperature plays pivotal role for sex determination. Mendal’s theory argues that there is an equal chance of having ...
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Sex Ratio Variation in Iberian Pigs
... expected sex ratio at conception is ...the sex ratio were a trait optimized by natural selection as Fisher ...regarding sex ratio theory assume that genetic variance for ...
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Density dependent sex ratio and sex specific preference for host traits in parasitic bat flies
... investigating sex ratio, aggregation and host pref- erence of parasitic bat ...fly sex ratios are highly variable among hosts and we demonstrate that this vari- ation is strongly associated with ...
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Correcting for unequal catchability in sex ratio and population size estimates
... and sex ratio ...and sex ratio ...for sex ratio ...the sex ratio estimates became inaccurate when even slight heterogeneity was present, but when males and females ...
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ANALYSIS OF SEX RATIO IN PUNE DISTRICT
... of sex ratio is essential for the understanding the conditions of women in the ...children, sex selective abortions and traditional attitudes of the ...of sex ratio is more ...the ...
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A DEVIANT SEX RATIO IN DROSOPHILA MELANOGASTER
... 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] ...
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