The Selective Pressure Acting on the ABO Blood System May

question 43

Multiple Choice

The selective pressure acting on the ABO blood system may be that people with blood types O and B are resistant to:

• A)sickle-cell anemia
• B)phenylketonuria
• C)smallpox
• D)tuberculosis

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Definitions:

Sternum

The long, flat bone located in the center of the chest, commonly known as the breastbone, connecting to the ribs via cartilage.

Process

A series of actions or steps taken in order to achieve a particular end.

Rib Cage

The structure formed by the ribs and their connecting tissues, enclosing and protecting the chest cavity and its organs, like the heart and lungs.

Rib Cage

The structure of bones including the ribs, sternum, and part of the spinal column that encloses and protects the thoracic cavity and its organs.