Dology
Which sentence best states the importance of using control groups?
Control groups provide a method by which statistical variability
can be reduced
Control groups allow comparison between subjects receiving
a treatment and those receiving no treatment
Control groups eliminate the need for large sample sizes,
reducing the number of measurements needed.
Control groups eliminate the need for statistical tests and
simplify calculations.
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Ответ:
Species C.
Explanation:
In a cladogram, any two species which originate from the same branch of the tree, share common ancestry. As we can see in the diagram, the species 1 and 4 have a common touch base with the branch of tree arising out of species C, therefore both species 1 and 4 have some characteristics common /similar to that of the species C.
Therefore answer is species C
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