Genetic Variation Practice Test

A class studies a population of 18 guppy fish (same species) kept in one aquarium with the same water temperature, food, and light. Students record an inherited trait: tail fin pattern. Remember: populations contain genetic variation.

Which claim about variation in this population is incorrect based on the evidence?

A student makes a model of a population of 8 rabbits (same species) living in the same grassy field with the same weather conditions. The model uses icons to show an inherited trait: fur color. Remember: populations contain genetic variation.

Which claim about variation is unsupported by the evidence in the population model?