Repressor Proteins

question 15

Multiple Choice

Repressor proteins

• A) prevent binding of RNA polymerase to DNA.
• B) cause the DNA regions that contain the operator to twist or loop.
• C) inactivate operon genes when their products are not required.
• D) bind to sets of operators.
• E) do all of these.

---

Definitions:

Temperaments

Inherent personality traits and tendencies that significantly influence individuals' behaviors and interactions from an early age.

Physical Characteristics

Observable attributes of an object or an individual, including shape, size, color, and arrangement.

Epigenesis

Mechanism that turns genes on or off and determines functions of body cells.

Monozygotic Twins

Identical twins formed from a single fertilized egg that splits into two, sharing virtually all their DNA.