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?

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

to eliminate genetic variance in brain patterns.

Answer 2

The reason that the scientists used only mice from the same purebred strain is to ensure genetic consistency among the two groups of mice. By using mice from the same strain, the scientists can minimize genetic variation as a factor that could potentially influence the results of the experiment.

Using mice from the same purebred strain helps to control for genetic differences that may affect learning ability and food consumption. By eliminating genetic variability, the scientists can be more confident that any differences in learning ability observed between the two groups are due to the manipulation of food and not due to genetic factors.

Genetic consistency is important in experiments because it allows researchers to make direct comparisons between the groups being studied. It helps in drawing accurate conclusions and determining the causal relationship between variables being investigated.

Overall, by using mice from the same purebred strain, the scientists can reduce the influence of genetic variability and increase the internal validity of the experiment, improving the accuracy of the results and the reliability of any conclusions made.