1.   Dr. Don Melnick, an evolutionary geneticist who is director of the Center for Environmental Research and Conservation at Columbia, disagrees.

2.   For example, Dr. John Werren, an evolutionary geneticist at the University of Rochester, studies parasitic wasps that lay their eggs on caterpillars and other insects.

3.   Laurence Hurst, an evolutionary geneticist at the University of Bath, predicts the two studies will provoke a heated debate.

4.   Lewontin, an evolutionary geneticist, stresses that he is not denying the important role that genes play in human development.