Question

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in running through a maze. They were trained by giving them a mild electric shock whenever they took a wrong turn. Immediately after each learning session, one group of mice was fed, but the other was not, A week later, all of the mice were tested to see whether they could still run the maze correctly. The group that had been fed had retained this ability, but the other group had not. The probable reason that the scientists used only mice from the same pure-bred strain is so that?

Answer 1

There would be no other variable than food or no food.

Sra

Answer 2

genetic differences would not affect the outcome of the test

Answer 3

[AI-generated answer — Explain Bot]

The probable reason that the scientists used only mice from the same purebred strain is to minimize the potential genetic variations that could influence the learning ability and food connection. By using mice from the same purebred strain, the researchers can ensure that any observed differences in learning ability and retention are more likely to be due to the experimental conditions (i.e., food deprivation and feeding) rather than genetic differences between the mice. This helps to enhance the internal validity of the experiment and increases the confidence in the findings. Additionally, using mice from the same purebred strain also allows for better comparisons between the two groups and reduces the potential confounding effects of genetic variability.