The striking diversity of sperm shape across the animal kingdom is still poorly understood. Postcopulatory sexual selection is an important factor driving the evolution of sperm size and shape. Interestingly, morphometric sperm traits, such as the length of the head, midpiece and flagellum, exhibit a strong positive phenotypic correlation across species. Here we used recently developed comparat...

Students often ask why we use h rather than h to refer to heritability. You can blame Sewall Wright for this, as he used h to denote the correlation between breeding and phenotypic values within an individual. Recalling that the square of the correlation is the total fraction of variation accounted by a variable leads to the universal use of h. Indeed, whenever we speak of heritability, we alwa...

Students often ask why we use h rather than h to refer to heritability. You can blame Sewall Wright for this, as he used h to denote the correlation between breeding and phenotypic values within an individual. Recalling that the square of the correlation is the total fraction of variation accounted by a variable leads to the universal use of h. Indeed, whenever we speak of heritability, we alwa...

Heritability (0.08) was evaluated in a model whereas the comparable group used interaction between herd and control day. The influence of as heritability (0.03). herds years testing (0.04 0.05). Phenotypic correlations milk urea concentration milking traits: daily quantity milk, content fat proteins (P <0.0001). Positive low phenotypic correlation (0.15) found yield, amount (0.10). Between c...

The main aim of this paper was to resolve the correlation between intelligence test scores and standing height into genetic and environmental components. Data on 1181 identical and 1412 fraternal twin pairs (all males) were retrieved by matching files from the Norwegian Army with twin registries. The data were analyzed by means of a structural equation model comprising latent genetic, shared en...

BACKGROUND Epidemiological studies worldwide have shown that A. fumigatus exhibits important phenotypic and genotypic diversity, and these findings have been of great importance in improving the diagnosis and treatment of diseases caused by this fungus. However, few studies have been carried out related to the epidemiology of this fungus in Latin America. This study's aim is to report on the ep...