Dr Blumberg became fascinated by polymorphism, the study of inherited variations in human beings.
Hirschfeld's important contribution to sex research was his doctrine of sexual intermediaries, which emphasized the variety of types of naturally occurring variations in human sexuality.
Some parents bristle at the notion that their child's autism diagnosis is a reflection of the culture's tendency to pathologize natural variations in human behavior.
Now Mr. Dallas, a chef in Seattle, is convinced he has a genetic predisposition for risk-taking, a conclusion the researchers say is not unwarranted, since they believe similar variations in human genes can explain why people perceive danger differently.
Prof Henneberg, an expert in the variations in human body structure and an elected visiting fellow at Oxford University, said he disagreed with the forensic expert Dr Meiya Sutisno, who earlier in the trial said Mr Murdoch was the man in the footage.
It is the third such venture after the consortium that worked on the human genome and the SNP Consortium, a group that is cataloging genetic variations in human DNA that may help pinpoint the gene variants that contribute to many diseases.
And when, sometime in the future, a detailed map of the variations in human DNA -- individual point mutations, called single nucleotide polymorphisms or SNP's, in the chain of nucleotides that forms a strand of DNA -- becomes available, investigators will be able to directly compare specific chromosomal variations in people affected by an illness and in healthy subjects.
The variations in human personality derive largely from the different temperaments human beings possess.
The team also found marked variations in human use of plant life around the world.
The model simulates spatial and temporal variations in human biting rate at the landscape scale.
In [15, 16], probabilistic templates are used to take into account the possible variations in human shape.
