Most defects in beta thalassemia are a result of what genetic defect?
a. Loss of gene expression because of promoter region methylation
b. Point mutations in regions of the DNA controlling gene expression
c. Deletion of the structural globin gene
d. Omission of the alpha globin chain
Correct Answer: B
You might also like to view...
Severely elevated blood pressure may be fatal and is also known as:
A) hypotensive crisis B) hypertensive crisis C) cerebrovascular accident D) cardiac disease
To qualify for Medicare, disabled adults must have been receiving Social Security disability benefits for:
A) 1 year. B) more than 1 year. C) more than 2 years. D) more than 3 years.
Exposure to human papilloma viruses may cause cancer of the:
A) liver B) intestines C) lungs D) cervix of the uterus
Brown fat stores in the fetus accumulate
A) during the first trimester B) during the third trimester only C) during the second and third trimester D) immediately prior to birth