If Professor Freeborn lesions the amygdala of a laboratory rat, the rat will most likely become.

Answer: the aggressiveness of the rat will decrease.

Explanation:

Amygdala is a multinuclear complex located at the anteromedial temporal lobe ventral. Amygdala contributes to the regulation of emotional behaviour. Rats amygdala are mostly used in to know the functions of amygdala.

Lesion is any abnormal deviation in the tissue of an organism. Lesions of the amygdala can be caused due to deposition of calcium in the amygdala. This is known as Urbach-Wiethe disease.

Lesions of amygdala of a laboratory rats causes the aggressiveness of the rat to decrease.

In human beings, there are two amygdala, one is found in the left side of the brain and the other is found at the right side of the brain.