The independent variable is the only factor that a scientist varies for different groups in an experiment. measures in an experiment. keeps constant for each group in an experiment. does not change throughout an experiment.

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim