title: Genome organization and ploidy number in Trypanosoma cruzi.
abstract: Trypanosoma cruzi total DNA was analyzed by DNA:DNA reassociation kinetics. The nonlinear least-squares computer solution could reasonably be fitted to three second-order kinetic components. The highly repetitive, middle repetitive, and single copy components comprised 9, 35 and 49% of the genome, respectively. The single copy sequences showed a kinetic complexity of approximately 4 times that of Escherichia coli and of some 11,000 average-sized structural genes. The repetitive sequences (about 6900) presented the long-period pattern of interspersion with a modal length of 7800 bases. The kinetic complexity of total DNA was compatible with a value of at least a diploid genome per cell.
mesh_terms: D000818:Animals; D001483:Base Sequence; D004247:DNA; D009695:Nucleic Acid Renaturation; D011003:Ploidies; D012091:Repetitive Sequences, Nucleic Acid; D014349:Trypanosoma cruzi / Q000235:genetics*
chemical_list: D004247:DNA