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  • Articles: DFG German National Licenses  (6)
  • 1965-1969  (6)
Source
  • Articles: DFG German National Licenses  (6)
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Cri-du-chat-Syndrom mit Translokation 5/D2 (1966)
    Springer
    Human genetics 〈Berlin〉 2 (1966), S. 63-77 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00285911
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Polyploidization in the fish family Cyprinidae, order Cypriniformes (1969)
    Springer
    Human genetics 〈Berlin〉 7 (1969), S. 245-250 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In the fish family Cyprinidae, a diploid-tetraploid relationship exists among the various members examined as shown by chromosome analysis and measurements of the DNA content per cell. Duplications of individual gene loci in the tetraploids are demonstrated using the LDH- and 6-PGD-isoenzyme systems as gene markers, thus confirming the hypothesis of polyploidization. In some diploids endowed with an increased DNA content per cell, a duplication is demonstrable for the 6-PGD cistrons only, and not for the LDH cistrons, thus supporting the hypothesis that regionally confined duplications have occured independently of polyploidization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00273174
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Duplication of the LDH gene loci by polyploidization in the fish order Clupeiformes (1968)
    Springer
    Human genetics 〈Berlin〉 5 (1968), S. 190-196 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Within the order Clupeiformes, chromosome analysis and DNA measurements have indicated a diploid-tetraploid relationship among closely related species. To confirm the presence of polyploidization at single gene loci we studied the LDH isoenzyme system. The results obtained are in agreement with the hypothesis of polyploidization. While the diploid species show two gene loci for LDH, the tetraploid species exhibit four separate gene loci.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00281954
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Zur Gen-Lokalisierung der Glucose-6-Phosphat-Dehydrogenase bei Vögeln (1969)
    Springer
    Human genetics 〈Berlin〉 8 (1969), S. 137-141 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Kanarienvogel (Serinus) und Stieglitz (Carduelis) zeigen für das Enzym Glucose-6-Phosphat-Dehydrogenase in der Stärkegelektrophorese jeweils nur eine Bande, die aber verschiedene Positionen einnehmen. Interspecieshybriden beider Geschlechter wurden aus der natürlichen Kreuzung Kanarienvogel (f)xStieglitz (m) erhalten; die Identifizierung des Geschlechts der äußerlich ähnlichen Hybriden erfolgte durch Chromosomenanalyse. Die Hybriden zeigen in beiden Geschlechtern ein identisches Elektrophoresemuster, das die gleiche Zone umfaßt wie bei dem in vitro-Gemisch aus Gewebehomogenaten der Ausgangsarten. Entsprechende Befunde liefert die Analyse der 6-Phosphogluconatdehydrogenase. Hieraus ist zu schließen, daß beide Enzyme von autosomalen Genen determiniert werden.
    Notes: Summary The electrophoretic mobility of the single G-6-PD-band in Serinus and Carduelis is different. The natural cross Serinus (f)xCarduelis (m) results in viable hybrids of both sexes, as confirmed by chromosome analysis. The isoenzymes of G-6-PD are indentical in both sexes of the hybrids, exhibiting a broad diffuse pattern comprising the same zone as obtained from an in vitro mixture of parental homogenates. Related findings are reported on the enzyme 6-PGD. It is concluded that both enzymes are autosomally determined in these species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00295837
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Asynchronous activation of parental alleles at the tissue-specific gene loci observed on hybrid trout during early development (1968)
    Springer
    Biochemical genetics 1 (1968), S. 287-300 
    Details
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract By using three genetic markers, the asynchronous activation of parental alleles during embryonic development was studied on interspecific hybrids between the male brown trout and the female rainbow trout. The genetic markers used were lactate dehydrogenase (LDH) A2 as well as C subunits and alcohol dehydrogenase (ADH) subunits. Starch gel electrophoresis was utilized. The presence of LDH A2 subunits was detected from a very early stage of development in whole embryo extracts. However, up to a few days after hatching (63rd day), A2 subunits present were exclusively of the A2R type derived from the rainbow mother. The coexistence of the products of both parental alleles at this gene locus became evident only at the 70th day. The LDH C subunits which occur only in the retina of the eye as well as the ADH subunits which occur only in liver made their first appearances at the 95th and 150th days, respectively. At these dates, only the maternally derived rainbow subunits were detectable. It took another 40 days for the paternally derived brown subunits to make their appearance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00485183
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Persistence of maternal isoenzyme patterns of the lactate dehydrogenase and phosphoglucomutase system during early development of hybrid trout (1969)
    Springer
    Biochemical genetics 3 (1969), S. 91-97 
    Details
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Developmental changes in the isoenzyme patterns of LDH and PGM during early embryogenesis (until hatching) in two trout species (Salmo trutta and Salmo irideus) as well as in their reciprocal interspecific hybrids are reported, completing a previous study which had commenced from hatching onward (Hitzeroth et al., 1968). Isoenzymes of both systems occur in unfertilized eggs and in embryos from fertilization onward. Until about the “Augenpunkt” stage, the isoenzyme patterns remain unchanged and are identical to the patterns of unfertilized eggs; the reciprocal hybrids correspond to the respective maternal species. Additional isoenzymes appearing for the first time at about the “Augenpunkt” stage in the interspecific hybrids show the same electrophoretic mobility as those in the animals of the respective maternal species at this developmental stage. It is discussed whether the appearance of additional isoenzymes characterizes the activation of maternally derived alleles of the embryonic genome, or whether maternally derived cytoplasmic factors are responsible for the occurrence of these additional bands.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00485976
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    Paper (German National Licenses)
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