such as "Introduction", "Conclusion"..etc
Dictyostelium amoebae inhabit forest soil consuming bacteria and yeast, which they track by chemotaxis. Starvation, however, prompts the solitary cells to aggregate and to develop as a true multicellular organism, producing a fruiting body comprised of a cellular, cellulosic stalk supporting a bolus of spores. Thus, Dictyostelium has evolved mechanisms that direct the differentiation of a homogeneous population of cells into distinct cell types, regulate the proportions between tissues and orchestrate the construction of an effective structure for the dispersal of spores4. Many of the genes necessary for these processes in Dictyostelium were also inherited by metazoa and fashioned through evolution for use within many different modes of development.
The amoebozoa are also noteworthy as representing one of the earliest branches from the last common ancestor of all eukaryotes. Each of the surviving branches of the crown group of eukaryotes provides an example of the ways in which the ancestral genome has been sculpted and adapted by lineage-specific gene duplication, divergence and deletion. Comparison between representatives of these branches promises to shed light not only on the nature and content of the ancestral eukaryotic genome, but on the diversity of ways in which its components have been adapted to meet the needs of complex organisms. The genome of Dictyostelium, as the first free-living protozoan to be fully sequenced, should be particularly informative for these analyses.
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