Examlex
Rank the following in order from most general to most specific:
1) gametic isolation
2) reproductive isolating mechanism
3) sperm-egg incompatibility in sea urchins
4) prezygotic isolating mechanism
Drive Reduction
A theory of motivation suggesting that behaviors are motivated by the desire to reduce internal states of tension.
Incentive Motivation
The idea that the level of motivation is affected by magnitude of reward: The greater the reward magnitude, the higher the motivation to obtain that reward.
Internal Arousal
The physiological and psychological state of being alert and engaged, often as a response to external stimuli or internal thoughts.
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