According to the in Focus Box: Traumatic Injury: from Concussions

question 2

Multiple Choice

According to the In Focus box: Traumatic Injury: From Concussions to Chronic Traumatic Encephalopathy, professional athletes, particularly football and hockey players, are at risk for:

• A)early-onset schizophrenia.
• B)permanent amnesia.
• C)chronic traumatic encephalopathy.
• D)imbalances in neurotransmitters, such as dopamine.

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Definitions:

HbS Allele

A variant of the hemoglobin gene responsible for sickle-cell disease, offering protection against malaria where prevalent.

Sickle-cell Anemia

A genetic blood disorder characterized by red blood cells that assume an abnormal, rigid, sickle shape.

Heterozygote Advantage

A genetic phenomenon where individuals heterozygous at a particular gene locus have a higher fitness than either of the homozygous forms.

Evolutionary Change

The process through which species undergo modification and diversification over generations due to natural selection, genetic drift, and other mechanisms.