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

Question

Quizplus · Accepted Answer

By comparing the genomes of different groups of photosynthetic organisms, we can determine their evolutionary relationship to one another, including whether or not they share a common ancestor. This approach would provide the most detailed test of the hypothesis of whether present-day chloroplasts originated from a single or multiple endosymbiotic events. By examining the genetic material, we can explore the similarities and differences in the chloroplast genomes of various organisms, and ultimately determine whether they arose from multiple independent events or if they share a common ancestor.

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