The Study of the Relative Power and Limits of Genetic

question 25

Multiple Choice

The study of the relative power and limits of genetic and environmental influences on behavior is known as

• A) molecular genetics.
• B) epigenetics.
• C) behavior genetics.
• D) genome research.

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Definitions:

Myelin

An insulating layer, or sheath, made of protein and fatty substances, that surrounds the axons of some neurons, enabling fast and efficient transmission of electrical impulses.

Synaptic Cleft

The small gap at a synapse between neurons, across which neurotransmitters move from one neuron to another.

Terminal Buttons

The small knobs at the end of an axon that release chemicals called neurotransmitters into the synapse, thereby transmitting nerve impulses to another nerve cell.

Cell Membrane

The thin, flexible barrier that surrounds cells, controlling the movement of substances in and out of the cell.