1.   It is therefore hard to see personal identification as the main evolutionary pressure leading to the famous black and white pattern.

2.   But Pinker argues that the mind cannot escape evolutionary pressures.

3.   Calvin and Bickerton suggest that brain enlargement in our ancestry was the result of evolutionary pressures that favored intelligence and motor coordination for making tools and throwing weapons.

4.   For Tattersall, the most striking factor in the relaxation of evolutionary pressures is the unprecedented mobility of humans in the modern world.

5.   In animals, melanin comes and goes at the dictates of evolutionary pressures.

6.   The evolutionary pressures behind dioecious plants are unknown, but there are some interesting trends.

7.   The human line, until the relatively recent weakening of evolutionary pressures, evolved to exploit a life as hunters and gatherers.

8.   Without the evolutionary pressure of choosy females, males are losing their bright colors.

9.   He believed short-term contingencies could play as important a role as irresistible evolutionary pressure.