When the Average Level of a Trait Remains Constant Over

question 56

Multiple Choice

When the average level of a trait remains constant over time, we observe

• A)mean level change.
• B)mean level stability.
• C)rank order stability.
• D)rank order instability.

---

Definitions:

Permease

is a type of protein involved in the transport of molecules across cell membranes, often functioning as part of facilitated diffusion or active transport mechanisms.

Potassium Cotransport

A mechanism involving the simultaneous transport of potassium and another substance across a cell membrane.

Concentration Gradient

The process by which the concentration of molecules moves from an area of higher concentration to an area of lower concentration, a fundamental principle in diffusion.

Dissolved Oxygen

The amount of oxygen present in water, crucial for the respiration of aquatic life and a key indicator of water quality.