The Main Point of Evolution Is That Development

question 90

Multiple Choice

The main point of evolution is that development

• A) is driven solely by genetics.
• B) of nonhumans can be easily explained, while human development is unexplainable.
• C) involves an interaction between genetic and environmental forces.
• D) seldom aids in adaptation.

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Definitions:

External Intercostals

The external intercostal muscles are located between the ribs and help with the mechanics of breathing by elevating the ribs during inhalation.

Elevates the Ribs

Refers to the action of certain muscles, such as the intercostal muscles, which increase the volume of the thoracic cavity during inhalation.

Internal Intercostals

Muscles located between the ribs that assist with the process of respiration by decreasing the volume of the thoracic cavity during exhalation.

Superior Border

The uppermost edge or boundary of an anatomical structure.