Collins and Bell (2004) investigated the impacts of elevated carbon dioxide (CO 2 ) concentrations on plant

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Collins and Bell (2004) investigated the impacts of elevated carbon dioxide (CO2) concentrations on plant evolution. They raised separate lines of the unicellular algae Chlamydomonas under normal and high CO2 levels. After 1000 generations, they measured the growth rate of all of the experimental lines in a high-COenvironment. The results for 14 experimental lines are presented in the following table. Growth rate is measured relative to the starting strain and has no units. Use these data to test whether the mean growth rate is associated with the CO2 treatment.

CO2 CO treatment Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal Growth rate 2.312.31

Normal Normal Normal Normal High High High High High High High High High High High High High High 1.301.30

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The Analysis Of Biological Data

ISBN: 9781319226237

3rd Edition

Authors: Michael C. Whitlock, Dolph Schluter

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