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What evidence shows that different species are related?

Topic

Evolution, Natural Selection and Adaptation

Framing Question

What evidence shows that different species are related?

Learning Objectives

  • Using gene trees, support the argument that plants have many genes and gene families in common with all other organisms.
  • Analyze the structural and biochemical evidence for the claim that a single endosymbiotic event between a eukaryotic cell and a cyanobacterium was ancestral to all chloroplasts, including chloroplasts in algal groups.
  • Formulate an evolutionary hypothesis that accounts for the both the similarities and differences among the chloroplasts of red algae, brown algae, green algae, and land plants, including differences in the number of membranes.
  • Draw a generic plant life cycle indicating the role of meiosis and mitosis in establishing multicellular haploid and multicellular diploid stages.
  • Contrast the relative size of the multicellular haploid stage in mosses, ferns, and angiosperms.
  • Use a computational phylogenetic tool and DNA sequences of one or more genes to predict the evolutionary relationships among major plant clades or between plants and other organisms.

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