Sentences with phrase «physical size variation»

This physical size variation is almost the only difference.

Not exact matches

By observing groups of flour beetles in the laboratory, Melbourne and Alan Hastings, a mathematical ecologist at the University of California, Davis, demonstrated that random variations in sex ratios and physical differences, such as body size, greatly contribute to the overall threat of extinction.

Research interests: Physical anthropology, limb ontogeny, heterochrony, growth and development, evolution of genus Homo (especially origin, dispersal and variation of Homo erectus), functional morphology / biomechanics, evolution and trends in hominin body size and shape

The first part describes variations in mental and physical health summary scores by their marital status and size of spousal age gap.