Genetically

question 96

Multiple Choice

Genetically,

• A) handedness seems to run in families to some degree.
• B) handedness is entirely environmentally determined.
• C) 100% of people are born to be right-handed.
• D) 50% of people are born to become right- or left-handed.

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Definitions:

Muscle Membrane

The semipermeable membrane surrounding muscle cells or fibers, essential for muscle contraction and signaling.

Dendrite Membrane

The outer cover of dendrites, which are the branch-like extensions of neurons that receive signals from other neurons.

Axon Hillock

The part of a neuron where the axon joins the cell body, often considered the site of action potential initiation.

Nerve Impulse

Propagation of an action potential on the membrane of an axon.