List the three criteria thomas hunt morgan was looking for in a model organism for genetic studies.

 
1)  small (size);

2)  produce large (sized) offspring; 

3)  easy to store in a laboratory. 

Neurotransmitters are messengers responsible for communication between neurons. they are released from synaptic vesicles and are received by receptors.  the communication is referred to as neurotransmission. the following statement is true about neurotransmitters: a. they're stored in synaptic vesicles in the axon.