1- Biologists often use comparisons of DNA sequences to test hypotheses about evolutionary relationships. The more closely the DNA sequences of two species match, the more closely they are related. There is a great deal of technical laboratory work involved in this type of DNA analysis and yet it is considered observational data. Why?
2- Explain the specific experimental design used to figure out the role of camouflage in the mouse populations by describing each of the components listed below as it relates to this study:
control group
experimental group
independent variable
dependent variable
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