Conducting experiments, using inquiry, and asking testable questions are processes that are used by

They utilize and make use of the scientific method in order to have clear basis and evidence for their investigations. Research method is always used to answer every scientific inquiry and in gaining evidential data or knowledge. The scientific method has the following process or at least undergoes the process of
1. Observation
2. Hypothesis
3. Experimentation
4. Interpretation of data
5. Evaluating the data
6. Passing and recording the data

These steps are crucial and the empirical data that these scientists obtain are very important to keep that is why research paper, thesis and dissertations exists.

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Scientists including biologists. These are steps of the scientific method, which most if not all scientists use.

The offspring will be blood type aa, bb, ab and oo or i