As important as environmental factors are to the development
of the individual, the importance of the DNA can’t be overstated.
Examples abound of identical twins (humans), with the same DNA, separated and
isolated at birth and raised in completely different environments who develop
in tandem – often uncanny – ways, such as choosing similar careers,
exhibiting similar mannerisms such as pushing back hair with the same hand
gesture, similar walking gaits, even driving the same make and model of cars. Clearly
both nature and nourishment play equally critical roles in developing the
individual.
