Probleme der biologischen Reduplikation: Funktionelle und morphologische Organisation der Zelle
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Elektronisch E-Book |
| Sprache: | German |
| Veröffentlicht: |
Berlin, Heidelberg
Springer Berlin Heidelberg
1966
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| Schlagworte: | |
| Online-Zugang: | Volltext |
| Beschreibung: | Lampbrush chromosomes which are chromosomes in meiotic pro phase with laterally projecting loops, have been observed in oocyte nuclei of several vertebrate, some invertebrate species, and in spermato cyte nuclei of Drosophila species. Especially large lampbrush chromo somes occur in oocytes of the urodele Amphibia and in spermatocyte nuclei of Drosophila hydei and some other species belonging to the hyde i subgroup. In Amphibia the premeiotic chromosomes show a chromomeric organization and a pair of lateral loops projects from each chromomere. Often the loops show a thin axis and a matrix consisting of many radial projecting fibers attached to it. Moreover, the loops are often asymmetric. One of the insertions of the loops in the chromomere may have long fibers and as one follows around the loops from this end, the projecting fibers become progressively shorter and then disappear so that the second end of the loops is bare of fibers. Some of the large loops show morphological peculiarities in length or thickness, or in the nature of their matrix. These characters are constant and locus specific and have allowed to establish loop maps for the genome of several Amphibian species. Lamp brush chromosomes are highly extensible. Breakages after stretching beyond the elastic limits occur always transversely accross chromo meres in such a way that a pair of lateral loops span the break. The axis of the loops appears to contain DNA and there is evidence that the DNA con sists of only one double helix in each loop |
| Beschreibung: | 1 Online-Ressource (VIII, 412 S.) |
| ISBN: | 9783642474095 |
| DOI: | 10.1007/978-3-642-47409-5 |
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| 245 | 1 | 0 | |a Probleme der biologischen Reduplikation |b Funktionelle und morphologische Organisation der Zelle |c herausgegeben von Peter Sitte |
| 264 | 1 | |a Berlin, Heidelberg |b Springer Berlin Heidelberg |c 1966 | |
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| 500 | |a Lampbrush chromosomes which are chromosomes in meiotic pro phase with laterally projecting loops, have been observed in oocyte nuclei of several vertebrate, some invertebrate species, and in spermato cyte nuclei of Drosophila species. Especially large lampbrush chromo somes occur in oocytes of the urodele Amphibia and in spermatocyte nuclei of Drosophila hydei and some other species belonging to the hyde i subgroup. In Amphibia the premeiotic chromosomes show a chromomeric organization and a pair of lateral loops projects from each chromomere. Often the loops show a thin axis and a matrix consisting of many radial projecting fibers attached to it. Moreover, the loops are often asymmetric. One of the insertions of the loops in the chromomere may have long fibers and as one follows around the loops from this end, the projecting fibers become progressively shorter and then disappear so that the second end of the loops is bare of fibers. Some of the large loops show morphological peculiarities in length or thickness, or in the nature of their matrix. These characters are constant and locus specific and have allowed to establish loop maps for the genome of several Amphibian species. Lamp brush chromosomes are highly extensible. Breakages after stretching beyond the elastic limits occur always transversely accross chromo meres in such a way that a pair of lateral loops span the break. The axis of the loops appears to contain DNA and there is evidence that the DNA con sists of only one double helix in each loop | ||
| 650 | 4 | |a Life sciences | |
| 650 | 4 | |a Medicine | |
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| 655 | 7 | |0 (DE-588)1071861417 |a Konferenzschrift |y 1965 |2 gnd-content | |
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Datensatz im Suchindex
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| author | Sitte, Peter 1929-2015 |
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| author_sort | Sitte, Peter 1929-2015 |
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| building | Verbundindex |
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| collection | ZDB-2-SNA ZDB-2-BAD |
| ctrlnum | (OCoLC)863968490 (DE-599)BVBBV042445195 |
| dewey-full | 570 |
| dewey-hundreds | 500 - Natural sciences and mathematics |
| dewey-ones | 570 - Biology |
| dewey-raw | 570 |
| dewey-search | 570 |
| dewey-sort | 3570 |
| dewey-tens | 570 - Biology |
| discipline | Allgemeine Naturwissenschaft Biologie |
| doi_str_mv | 10.1007/978-3-642-47409-5 |
| format | Electronic eBook |
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| genre_facet | Konferenzschrift 1965 |
| id | DE-604.BV042445195 |
| illustrated | Not Illustrated |
| indexdate | 2024-07-10T01:21:53Z |
| institution | BVB |
| institution_GND | (DE-588)30220-X |
| isbn | 9783642474095 |
| language | German |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-027880442 |
| oclc_num | 863968490 |
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| physical | 1 Online-Ressource (VIII, 412 S.) |
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| publishDate | 1966 |
| publishDateSearch | 1966 |
| publishDateSort | 1966 |
| publisher | Springer Berlin Heidelberg |
| record_format | marc |
| spelling | Sitte, Peter 1929-2015 Verfasser (DE-588)132221802 aut Probleme der biologischen Reduplikation Funktionelle und morphologische Organisation der Zelle herausgegeben von Peter Sitte Berlin, Heidelberg Springer Berlin Heidelberg 1966 1 Online-Ressource (VIII, 412 S.) txt rdacontent c rdamedia cr rdacarrier Lampbrush chromosomes which are chromosomes in meiotic pro phase with laterally projecting loops, have been observed in oocyte nuclei of several vertebrate, some invertebrate species, and in spermato cyte nuclei of Drosophila species. Especially large lampbrush chromo somes occur in oocytes of the urodele Amphibia and in spermatocyte nuclei of Drosophila hydei and some other species belonging to the hyde i subgroup. In Amphibia the premeiotic chromosomes show a chromomeric organization and a pair of lateral loops projects from each chromomere. Often the loops show a thin axis and a matrix consisting of many radial projecting fibers attached to it. Moreover, the loops are often asymmetric. One of the insertions of the loops in the chromomere may have long fibers and as one follows around the loops from this end, the projecting fibers become progressively shorter and then disappear so that the second end of the loops is bare of fibers. Some of the large loops show morphological peculiarities in length or thickness, or in the nature of their matrix. These characters are constant and locus specific and have allowed to establish loop maps for the genome of several Amphibian species. Lamp brush chromosomes are highly extensible. Breakages after stretching beyond the elastic limits occur always transversely accross chromo meres in such a way that a pair of lateral loops span the break. The axis of the loops appears to contain DNA and there is evidence that the DNA con sists of only one double helix in each loop Life sciences Medicine Life Sciences Life Sciences, general Biomedicine general Biowissenschaften Medizin (DE-588)1071861417 Konferenzschrift 1965 gnd-content Gesellschaft Deutscher Naturforscher und Ärzte Sonstige (DE-588)30220-X oth Erscheint auch als Druck-Ausgabe 978-3-540-03638-8 https://doi.org/10.1007/978-3-642-47409-5 Verlag Volltext |
| spellingShingle | Sitte, Peter 1929-2015 Probleme der biologischen Reduplikation Funktionelle und morphologische Organisation der Zelle Life sciences Medicine Life Sciences Life Sciences, general Biomedicine general Biowissenschaften Medizin |
| subject_GND | (DE-588)1071861417 |
| title | Probleme der biologischen Reduplikation Funktionelle und morphologische Organisation der Zelle |
| title_auth | Probleme der biologischen Reduplikation Funktionelle und morphologische Organisation der Zelle |
| title_exact_search | Probleme der biologischen Reduplikation Funktionelle und morphologische Organisation der Zelle |
| title_full | Probleme der biologischen Reduplikation Funktionelle und morphologische Organisation der Zelle herausgegeben von Peter Sitte |
| title_fullStr | Probleme der biologischen Reduplikation Funktionelle und morphologische Organisation der Zelle herausgegeben von Peter Sitte |
| title_full_unstemmed | Probleme der biologischen Reduplikation Funktionelle und morphologische Organisation der Zelle herausgegeben von Peter Sitte |
| title_short | Probleme der biologischen Reduplikation |
| title_sort | probleme der biologischen reduplikation funktionelle und morphologische organisation der zelle |
| title_sub | Funktionelle und morphologische Organisation der Zelle |
| topic | Life sciences Medicine Life Sciences Life Sciences, general Biomedicine general Biowissenschaften Medizin |
| topic_facet | Life sciences Medicine Life Sciences Life Sciences, general Biomedicine general Biowissenschaften Medizin Konferenzschrift 1965 |
| url | https://doi.org/10.1007/978-3-642-47409-5 |
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