β-Galactosidase Is Used in Bacterial Screening Assays for Visualization of Colonies

question 61

Multiple Choice

β-galactosidase is used in bacterial screening assays for visualization of colonies that contain recombinant DNA. What is its substrate?

• A) lactose
• B) X-gal
• C) sucrose
• D) lacZ
• E) agarose

---

Definitions:

Occupational Segregation

The division of labor based on demographic characteristics, such as gender, ethnicity, or race, leading to a concentration of individuals in certain occupations.

Gender Discrimination

The unfair treatment of individuals based on their gender, resulting in disadvantages in employment, education, and other areas.

Occupational Discrimination

Unfair treatment of workers based on characteristics unrelated to job performance, such as race, gender, or religion.