Background Information: Sex-linked traits are those whose genes are found on the X chromosome but not on the Y chromosome. In humans the X chromosomes are much larger than the Y chromosome and contains thousands of more genes than the Y chromosome. For each of the genes that are exclusively...
Recent theoretical and empirical work has suggested that the X chromosome may play a special role in the evolution of sexually dimorphic traits. We tested this idea by quantifying sex chromosome influence on male relative eyespan, a dramatically sexually selected trait in the stalk-eyed fly, Cyrto...
In seed plants, the proximate causes of spatial segregation of the sexes (SSS) and its association with environmental variation are thought to be linked to sexspecific morphological and physiological variation. To address the general question of linkage among SSS, plant traits and environmental gradien...
Among the genes not previously known to escape inactivation, the most significant one was EFHC2 whose 20% of variability was explained by sex. We also investigated cis expression quantitative trait loci (eQTLs) by analyzing 15,703 X-linked SNPs. The frequency and magnitude of X-linked cis ...
In the platyfish Xiphophorus maculatus , gene loci involved in melanoma formation, in different pigmentation patterns and in sexual maturity are closely linked to the sex-determining locus in the subtelomeric region of the X- and Y- chromosomes. The majority of traits encoded by these loci are ...
Recent theoretical and empirical work has suggested that the X chromosome may play a special role in the evolution of sexually dimorphic traits. We tested this idea by quantifying sex chromosome influence on male relative eyespan, a dramatically sexually selected trait in the stalk-eyed fly, Cyrto...
We further tested how sexual dimorphism and the mode of selection operating on the trait relate to the proportion of sex-linked genetic variance. Sexually selected traits did not show higher h2Z than morphological traits and there was only a weak positive relationship between h2Z and sexual ...
Oviposition and egg quality traits of dwarf and naked neck layers Oviposition and egg quality traits were studied in dwarf and naked neck layers in Maputo (Mozambique) during a 28-d period at 35 weeks of age. Birds were c... A Garcês,NH Casey - 《South African Journal of Animal Science...
Specifically, although dietary imbalance and restriction both reduce overall body size, it is unclear whether both have the same effect on the size of individual traits. Here, we use the fruit fly Drosophila melanogaster to explore the effect of dietary food versus protein-to-carbohydrate ratio on...
There are pervasive sex differences in psychological and physical well-being, many of which can be linked to the differential socialization of men and wome... Helgeson,S Vicki - 《Psychological Bulletin》 被引量: 957发表: 1994年 Changes in masculine and feminine traits over time: A meta-analy...