Genetic Testing Has Found That Gary, Ben, Tara, and Matt

question 110

Multiple Choice

Genetic testing has found that Gary, Ben, Tara, and Matt all carry a copy of a gene for hemophilia. However, Tara, who is the only female out of the four, does not show any signs of the disease, whereas Gary, Ben, and Matt have developed the disease. In this scenario, it can be inferred that hemophilia is most likely a(n)

• A) X-linked disease.
• B) sex-linked chromosomal abnormality.
• C) gene-linked abnormality.
• D) autosomal dominant disorder.

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Definitions:

Thoracic Duct

The largest lymphatic vessel in the body, which drains lymph from the lower and left side of the body into the venous system.

Cisterna Chyli

A dilated sac at the lower end of the thoracic duct into which lymph from the lower limbs and abdomen drains.

Cardiovascular System

The organ system that circulates blood through the body, consisting of the heart, blood, and blood vessels.

Palatine Tonsils

A pair of soft tissue masses located at the rear of the throat, part of the immune system.