Explain why the sickle cell mutation is selected for in certain areas of the world

In certain areas of the world, inbreeding is much more common.

It is a natural defense against malaria, so where malaria is prevalent, it will follow

Hope this helps! :)

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.