Answer:
The best example of hypothesis which leads to new experiment methods was done by Morgan where he used fruit flies.
In making an experiment their are two types of variable that should be consider, one is the dependent variable and the other one is the independent variables. I the question that dependent variable would be the result or the effect of the gender of mice and the independent is the ways in determining it. So the variables should be fair if you want your result to have no bias. Thus the answer would be letter B. because it has the same variables but different in gender
Archaebacteria move by using the form of a flagellum to propel a themselves.
hope that helps
