An Independent Variable in an Experiment Refers to

question 239

Multiple Choice

An independent variable in an experiment refers to

• A) the variable that is held constant across experimental conditions.
• B) the variable deliberately manipulated by the experimenter.
• C) the variable that the experimenter believes will change in value because of systematic correlations that exist in the experiment.
• D) the variable that provides an alternative explanation for the results of the experiment.

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Definitions:

Gene Flow

The transfer of genetic variations from one population to another, leading to changes in the genetic composition of those populations.

Biological Diversity

The variety and variability of life forms within a given ecosystem, biome, or for the entire Earth, involving species diversity, ecosystem diversity, and genetic diversity.

Genotype

The genetic makeup of an organism, consisting of both visible and unseen traits, determined by its DNA.

Phenotype

The observable characteristic of an organism that may or may not reflect a particular genotype due to the variable expression of dominant and recessive alleles.