Mutation Is the Only Evolutionary Mechanism That ________

question 31

Multiple Choice

Mutation is the only evolutionary mechanism that ________.

• A) is the ultimate source of variation in natural populations
• B) does little to change allele frequencies
• C) decreases fitness
• D) is more important in eukaryotes than in prokaryotes
• E) has no effect on genetic variation

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Definitions:

Receptors

are protein molecules on the surface of or within cells that bind to specific molecules, triggering a response by the cell.

Glucagon

A hormone produced by the pancreas that increases blood glucose levels by promoting the breakdown of glycogen to glucose in the liver.

Insulin

A hormone produced by the pancreas that regulates blood glucose levels by facilitating the uptake of glucose into cells.

Insulin Resistance

A condition in which the body's cells become less responsive to insulin, leading to higher blood sugar levels and often predisposing individuals to type 2 diabetes.