A COMPARISON OF SOLUTION AND MEMBRANE-BOUND DNA X DNA HYBRIDIZATION, AS USED TO INFER PHYLOGENY

作者：HOUDE P^*; SHELDON FH; KREITMAN M

来源：Journal of Molecular Evolution, 1995, 40(6): 678-688.

DOI：10.1007/BF00160517

• DNA X DNA HYBRIDIZATION
• SOUTHERN HYBRIDIZATION
• REPETITIVE DNA
• ANCIENT DNA

A new method of membrane-bound DNA x DNA hybridization was devised to accommodate the study of small quantities of DNA obtained from museum specimens for phylogeny reconstruction. Membrane-bound, single-stranded target genomic DNAs were competitively hybridized with a total genomic DNA probe to form hybrid duplexes required for the DNA dissociation experiments. We compared the thermal elution profiles derived from dissociating duplexes made with probes of whole genomic, single-copy, and repetitive DNA, as well as solution DNA x DNA hybridization using sc tracer. Quantitatively, pairwise indices of genetic distance derived from duplexes made with genomic probes depended entirely on hybridization of repetitive sequences, but a parallel set of experiments using repetitive and sc probes produced qualitatively similar results. The indices of genetic distance generated by the membrane-bound hybrids form an internally consistent, resolved tree which is in agreement with the solution DNA x DNA hybridization trials and traditional views of the phylogeny of the taxa under study.

• 出版日期1995-6