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Beyond these basic, universal features, eukaryotic genomes vary dramatically in terms of size and gene counts. Even so, genome size and the number of genes present in an organism reveal little about that organism's complexity (Figure 1).ne pg is equivalent to approximately 1 billion base pairs.) Therefore, genome size is clearly not an indicator of the genomic or biological complexity of an organism. Otherwise, humans would have at least as much DNA as the marbled lungfish, although probably much more.
A unicellular organism and a multicellular organism are different because, those that are unicellular consist of only a single cell. Those cells are very simple because they lack a nuclei and their DNA is not separated from the rest of the cell.Any injury or death of cell in unicellular organism leads to death's. multicellular organism is an organism made up of more than one cell, such as you, me, dogs, cats, birds, bugs, etc. They are complex. They are much much bigger than uinicell â¦ ular organisms and have more body functions. A unicellular organism (also called single cell organism) is an organism made up of only one cell.