People with Two _____ Alleles Have a Higher Risk for Developing

question 98

Multiple Choice

People with two _____ alleles have a higher risk for developing Alzheimer's disease, while people with two _____ alleles have a lower risk.

• A) E2; E3
• B) E4; E2
• C) E3; E4
• D) E2; E4

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Definitions:

Sickle Cell Anemia

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

Red Blood Cells

Cells in the blood that carry oxygen to body tissues and organs through the protein hemoglobin.

Dominant-Recessive

Describes the relationship between two alleles of a gene, where the dominant allele's traits are expressed in the phenotype over the recessive allele's traits, which are masked when paired with a dominant allele.

Color Blindness

A condition characterized by the inability to see colors in a normal way, resulting from deficiencies in the color-sensing pigments in the eye.