<span>Controlled experiment is an experiment done under controlled conditions in which only one variable at a time is changed in order to isolate the results. An alternative to a controlled experiment would be a correlation study. A correlation study is a research method in which two variables are compared (what are the similarities and the difference between them). So, correlation study is a type of controlled experiment in which ove variable is changed and the dependence with another variable is analyzed.</span><span />
The experiment is the procedure performed to prove a hypothesis. The researchers perform an experiment, which can provide data to prove, if the hypothesis suggested is true or not.
After conduction of the experiment several times, the researchers collect all the data and organize it. After organization of the data properly, they analyze the data collected, so that they can formulate, if the hypothesis is true or not.
Hence, the given blank can be filled with Analyze.
Answer:
Prophase
Explain:
The first step in mitosis, the nuclear envelope breaks down and chromosomes condense and become visible.
