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  • 1
    Electronic Resource
    Electronic Resource
    Multiple sex-linked reciprocal translocations in a termite from Jamaica (1981)
    Springer
    Cellular and molecular life sciences 37 (1981), S. 819-820 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Males of the termiteIncisitermes schwarzi from Jamaica have a diploid chromosome number of 32. In male meiosis there are 7 bivalents, and a ring of 18 chromosomes equivalent to sex chromosomes, 9 X's and 9 Y's. This is the largest reciprocal translocation complex so far described for any plant or animal species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01985658
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Multiple sex-linked reciprocal translocations in a termite from Jamaica (1981)
    Springer
    Details
    Publication Date: 1981-08-01
    Print ISSN: 0014-4754
    Topics: Biology , Medicine
    Published by Springer
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    PAPER CURRENT
  • 3
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    Thermal copoly/amino acids/ as inhibitors of glyoxalase I (1979)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: A number of copoly(alpha-amino acids) have been prepared thermally; some have been found to function as inhibitors of glyoxalase I, an enzyme which occupies a central position in Szent-Gyorgyi's theory of tumour genesis. These polymers are also of interest in the search for synthetic peptides having carcinostatic activity, since many natural peptides are active. The way in which the inhibitory activity varies with composition of the synthetic polymers has been investigated. Various properties (hydrophobicity, molecular weight, UV absorption, kinetic type) have been examined in a search for correlates of inhibitory activity.
    Keywords: CHEMISTRY AND MATERIALS (GENERAL)
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    NASA TECHNICAL REPORTS
  • 4
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    Membrane, action, and oscillatory potentials in simulated protocells (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Electrical membrane potentials, oscillations, and action potentials are observed in proteinoid microspheres impaled with (3 M KCl) microelectrodes. Although effects are of greater magnitude when the vesicles contain glycerol and natural or synthetic lecithin, the results in the purely synthetic thermal protein structures are substantial, attaining 20 mV amplitude in some cases. The results add the property of electrical potential to the other known properties of proteinoid microspheres, in their role as models for protocells.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: Naturwissenschaften (ISSN 0028-1042); 69; 1982
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    NASA TECHNICAL REPORTS
  • 5
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    Towards an organic photobattery - Photovoltaic properties of some thermal copolyamino acids (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Thermal copolymers of amino acids have been examined as a novel material for photovoltaic devices. Due to the steric effects of amino acids during polymerization, these polymers are highly ordered, and pigments such as flavins and pterins are formed as part of the polymer. The controllably varied composition of the amino acids in the polymer makes it possible to get either electron-donor or electron-acceptor, or both kinds of groups in varying degrees. The constituent photosensitive element has been made either of photosensitive polymer film or spherule.
    Keywords: CHEMISTRY AND MATERIALS (GENERAL)
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    NASA TECHNICAL REPORTS
  • 6
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    The updated experimental proteinoid model (1982)
    In:  Other Sources
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    Publication Date: 2019-06-28
    Description: The experimental proteinoid model includes new results indicating that polymers sufficiently rich in basic amino acid catalyze the synthesis of peptides from ATP and amino acids and of oligonucleotides from ATP. The need for simulation syntheses of amino acids yielding significant proportions of basic amino acids is now in focus. The modeled simultaneous protocellular synthesis of peptides and polynucleotides is part of a more comprehensive proposal for the origin of the coded genetic mechanism. The finding of membrane and action potentials in proteinoid microspheres, with or without added lecithin, is reported. The crucial nature of a nonrandom matrix for protocells is developed.
    Keywords: LIFE SCIENCES (GENERAL)
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    NASA TECHNICAL REPORTS
  • 7
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    Ancient microspheres - Abiogenic, protobiogenic, or biogenic? (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Criteria of biogenicity of microspheroidal objects, which have been interpreted as microfossils, are here reviewed in the light of additional data. Much weight has been placed by some commentators on constrained heterogeneity as a primary criterion of biogenicity. The data from the field and laboratory suggest the need for continuing reservation in the interpretation of these objects. On the basis of these and other data, reasons are given for the alternative explanation that the objects are lithified relics of protobiotic assemblages. The question remains open as to whether the early Archean spheroidal objects are abiotic, protobiotic, or biotic in origin.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: Precambrian Research (ISSN 0301-9268); 23; 1-8
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    NASA TECHNICAL REPORTS
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