In Tracing the Development of Primitive Characteristics, Darwin Reminds Us

question 28

Short Answer

In tracing the development of primitive characteristics, Darwin reminds us to consider primitive and specialized characteristics as a _____ rather than a direct and single line, keeping in mind that different species have unique histories of evolution.

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Definitions:

Parietal Pleura

The outer membrane that lines the inner surface of the chest wall and diaphragm in the thoracic cavity, but does not cover the lungs directly.

Peritonitis

Inflammation of the peritoneum, the thin tissue that lines the inner wall of the abdomen and covers most of the abdominal organs.

"-Itis"

A suffix used in medical terminology to denote inflammation of an organ or tissue.

Inflammation

A biological response to harmful stimuli, including pathogens, damaged cells, or irritants, characterized by redness, warmth, swelling, and pain.