The Mutation That Causes Sickle Cell Disease

question 39

Multiple Choice

The mutation that causes sickle cell disease

• A) occurs in the same gene that, when mutant in a different way, causes beta thalassemia.
• B) deletes two contiguous DNA bases.
• C) results in a single DNA base change that does not alter the encoded amino acid.
• D) changes a valine to a glutamic acid in the beta globin gene.
• E) changes a glutamic acid to a valine in the alpha globin gene.

---

Definitions:

Minimum Wage

The lowest legal hourly pay rate that employers can offer to workers.

Quantity Supplied

The total amount of a product or service that sellers are willing and able to sell at a given price, over a specified period of time.

Quantity Demanded

The total amount of a good or service that consumers are willing and able to purchase at a given price over a specified period.

Efficiency Wage

A wage rate set above the market equilibrium to increase productivity and efficiency among workers by attracting and retaining higher-quality employees.