Jean-Baptiste Lamark Proposed That Populations Evolve When Traits Acquired During

question 45

Multiple Choice

Jean-Baptiste Lamark proposed that populations evolve when traits acquired during the lifetime of a parent are passed down to offspring.What is wrong with this proposal?

• A) Only changes in the DNA sequence of an organism can be inherited. Traits acquired throughout life generally do not involve DNA.
• B) The environment chooses which traits are necessary for survival rather than the individual.
• C) Changes in a species occur at the individual level rather than at the population level.
• D) The inheritance of acquired traits would not lead to speciation because it would cause all of the individuals in a population to become more similar.

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Definitions:

Osmotic Pressure

The pressure required to prevent the flow of a solvent through a semipermeable membrane that separates two solutions with different concentrations.

Solute Concentration

The amount of a substance dissolved in a unit volume of solution.

Selectively Permeable

A property of cellular membranes that allows some substances to pass through while preventing the passage of others.

Osmosis

A process where water molecules move from a region of lower solute concentration to a higher solute concentration through a semipermeable membrane.