It revealed that assortative mating was moderately positive for both ornaments.

Insemination and assortative mating experiments failed to identify prezygotic mating barriers.

If other traits are measured, assortative mating will again be found.

Such assortative mating means that the offspring will usually be well endowed with a talent.

Our results show that assortative mating needs to be considered in population genetic studies of body height and weight.

When assortative mating was taken into account, shared environmental factors had no effect on phenotypic variation in body height or BMI.

They also call for studying the potential role of assortative mating in local adaptation and evolution of ornaments in both sexes.

This study showed significant heritability, which is slightly increased by assortative mating, and significant effects of primarily nonparental shared environment on CD.

At the center of the zone, hybrids are abundant, although deviations from Hardy-Weinberg and linkage disequilibria are strong, due in part to assortative mating.

Based on data for 1,657 pairs of birds, we found large interannual variation: assortative mating varied from positive to negative.

Assortative mating was evident for body height and BMI.

Preferential Mating and Assortative Mating.

Assortative mating by body height and weight is well established in various populations, but its causal mechanisms remain poorly understood.

Assortative mating is a potential outcome of sexual selection, and estimating its level is important to better understand local adaptation and underlying trait evolution.