Abstract
RECENT work has involved classifying bacteria according to their DNA base composition and homology (for example, ref. 1). This work has used the hybridizing techniques2,3 developed for hybridizing RNA with a DNA of high molecular weight which was immobilized in an agar gel. An attempt has also been made to determine whether there is any homology between the DNA of two mycoplasma species, Mycoplasma gallisepticum and Mycoplasma gallinarum, and the DNA of a bacterium Haemophilus gallinarum4. Evidence was presented which demonstrated the reversion and transformation of avian mycoplasmas to H. gallinarum5 but no DNA homology was found. Neither could DNA homology be demonstrated between the DNAs isolated from Streptococcus MG and Mycoplasma pneumoniae—another pair of organisms which have been suspected of being genetically related6—although the two DNAs had similar base compositions. What follows is a report of an attempt to determine whether two mycoplasma species, Mycoplasma mycoides variety capri and Mycoplasma laidlawii, are genetically related.
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WALKER, R. DNA Homology of Two Mycoplasma Species. Nature 216, 711–712 (1967). https://doi.org/10.1038/216711a0
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DOI: https://doi.org/10.1038/216711a0
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