A 27-year-old reports hoarseness with dry cough. Examination reveals inflamed vocal cords.

A. Hypertension is always linked to the Y chromosome and environmental factors:

Hypertension is a multifactorial disease, influenced by genetics and environment, but it is not linked specifically to the Y chromosome.

B. Turner's syndrome is a disorder in which a female has a completely or partially missing X chromosome:

Turner's syndrome (45, X) is a chromosomal disorder where females are missing all or part of one X chromosome, leading to various physical and developmental features.

C. Type 2 DM (T2DM) is caused by family history, behavior, and other factors:

While this is true, Type 2 diabetes is a multifactorial disease, not a chromosomal alteration.

D. Y chromosome as hemophilia is associated with the X chromosome:

Hemophilia is an X-linked disorder, not Y-linked. It is passed through the X chromosome, typically affecting males.

A. Alkalosis and insomnia:

Alkalosis does not trigger sickling; acidosis (low pH) is more harmful. Insomnia alone is not a direct trigger.

B. Reduced stress and warm environmental temperature:

Reduced stress and warmth help prevent crises rather than cause them.

C. Acidosis and dehydration:

Acidosis promotes sickling of RBCs, and dehydration increases blood viscosity, both triggering vaso-occlusive crises.

D. High fat diet and hyperoxia:

A high-fat diet is linked to cardiovascular disease, and hyperoxia (excess oxygen) is not a trigger for sickling.