As You Are Taking a Test, You Inadvertently Drop Your

question 409

Multiple Choice

As you are taking a test, you inadvertently drop your pencil, reach down, pick it up, and put it back on the desk. This voluntary action involves motor signals that are communicated to your muscles via the _____ nervous system.

• A) autonomic
• B) sympathetic
• C) parasympathetic
• D) somatic

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Definitions:

Alloploid

An organism having two or more sets of chromosomes that are derived from two different species.

Chromosomes

Proteinous, string-like entities situated in the cell nucleus of animals and plants, containing a single DNA molecule.

Phylogenetic Species

Refers to a group of organisms that are classified together based on a common ancestor, emphasizing genetic lineage.

Biological Species Concept

A definition of species that refers to groups of interbreeding natural populations that are reproductively isolated from other such groups.