Digitale Medien
Springer
Molecular genetics and genomics
93 (1962), S. 441-452
ISSN:
1617-4623
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
Notizen:
Summary Crossing experiments are performed with the starforming bacteriumPseudomonas echinoides, in order to ivestigate the genetical structure of the cells and the mechanism of the gen transfer. For this purpose mutants are produced mainly by nitrite. They are selectively marked by synthesis blocks and nonselectively by different pigment production. With these mutants reverse crosses and multioint testcrosses are performed. By quantitative evaluation of the crosses it is possible to arrange the sequence and the approximate distance of the gens to a linear chromosome map. All cells behave statistically equivalent during the genetical exchange. All mutants are sexual compatible. The experiments do not show any sexual polarity.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00888802
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