You Propose a Set of Experiments to Test Whether Present-Day

question 244

Multiple Choice

You propose a set of experiments to test whether present-day chloroplasts originated from a single or multiple endosymbiotic events.Which experimental approach would provide the most detailed test of these hypotheses?

• A) Testing whether different groups of photosynthetic organisms have similar pigments in their chloroplasts
• B) Testing whether the chloroplasts of different groups of photosynthetic organisms have the same structure
• C) Performing an instrumental test to determine whether the wavelengths of light absorption by chloroplast pigments are the same in different groups of photosynthetic organisms
• D) Using structural chemistry to test whether the light-absorbing pigments in different groups of photosynthetic organisms are the same
• E) Comparing the genomes of chloroplasts found in different groups of photosynthetic organisms to determine their evolutionary relationship to one another as well as to free-living species

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