Studies have shown that dimorphism is the product of changes in both male and female traits.

Nature also provides several examples of handedness in traits that are usually symmetric.

That, after all, is what a culture is-a group of people who share in common certain acquired traits.

This was coupled with positive changes in evaluated behavioural traits.

Evidence for common descent may be found in traits shared between all living organisms.

The criteria for classification may be arbitrary if they ignore gradual variation in traits.

That over time these new "breeds" will become more resistant to the stresses of the environment and change in genetic traits.

He was struck by the similarity in their intensity, traits and appearance.

This organization is not done subjectively-it's based on a statistical analysis of similarities in traits.