Multiple genes inherited from each parent determine a person's eye color.

Possibly only six genes determine the color of a person's skin out of between 30,000 and 40,000.

"But genes determine where a person fits in the bell curve," he said.

The genes primarily determine the amount, patterns and thickness of chest hair.

Like all behavioral traits, genes alone do not determine an individual's personality or behavior, for the influence of the environment is just as important.

Looked at one way, the data say that genes can determine cancer risk.

This complex process would lead to the understanding of how these genes would determine immune responses.

"The male genes alone do not determine the character of a child."

Your genes partly determine how much cholesterol your body makes.

In such cases, genes determine the timing of the environmental impact.