Application of PCR: Organismal and Population BiologyPolymerase chain reaction can produce large quantities of specific DNA from small, degraded, and impure samples

摘要: sive analysis of gene structure from a limited number species, primarily humans, mice, fruit flies, yeast, and the bacterium Escherichia coli. The powerful new molecular biological methods have also led to major discoveries in population biology study organismal evolution. Among many achievements are better understanding evolutionary relationships among groups microorganisms (Woese 1987) discovery that apes humans had common ancestor as recently 5 million years ago (Wilson et al. 1989). Despite profound nature such discoveries, little data been generated by when world's total biota is considered. Only small individuals species