Natural selection is a key mechanism of evolution, which results from the differential
reproduction of phenotypes. We describe fecundity selection at different parity transitions on …

Natural selection is a key mechanism of evolution, which results from the differential
reproduction of individuals due to differences in phenotype. We describe fecundity selection …

Generally, most physical performance capacities improve with age during childhood and
adolescence. Moreover, during this life period sex differences are observed for a variety of …

Phenotypic traits in humans are under selection pressure and are still evolving, but the
relative importance of these traits remains to be investigated. We therefore analyzed jointly …

It is commonly assumed that children's games are one of the ways in which boys and girls
learn appropriate sex rBle behavior in their own society (1, 2, 7). It follows that differences in …

In two previous publications (1, 2), the game choices of boys and girls were compared with
those listed in the early work of Terman (8). These comparisons demonstrated marked …

We artificially selected for body size in Drosophila melanogaster to test Lande's quantitative
genetic model for the evolution of sexual size dimorphism. Thorax width was used as an …

Human mate preferences are related to many morphological traits, such as female waist-to-
hip ratio (WHR), body mass index (BMI), male height or facial symmetry. People also vary in …

Background Aim of this study is to describe the relationship between anthropometric traits
and educational attainment among Estonian schoolchildren born between 1937 and 1962 …

Fluctuating asymmetry (FA), small random fluctuations from perfect bilateral symmetry, is an
indicator of developmental stability and therefore of good genes. Sexually selected …