書誌事項
- 公開日
- 1974
- 権利情報
-
- https://www.karger.com/Services/SiteLicenses
- https://www.karger.com/Services/SiteLicenses
- DOI
-
- 10.1159/000130295
- 公開者
- S. Karger AG
この論文をさがす
説明
<jats:p>Male heterogamety, interpreted as an XX/XY sex-chromosome system, occurs in the turtle genus Staurotypus (family Kinosternidae). Meiotic analysis showed that the basis for the heteromorphism resides in relatively small regions of a pair of macrochromosomes. Heteromorphism was not observed in the three other genera belonging to the same family. Available data for reptiles and higher vertebrates strongly suggest that sex-chromosome heterogamety has evolved independently at least three times in reptiles (in turtles, lizards, and snakes) and, therefore, that the sex chromosomes of birds do not share a common ancestry with those of snakes.</jats:p>
収録刊行物
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- Cytogenetic and Genome Research
-
Cytogenetic and Genome Research 13 (5), 419-425, 1974
S. Karger AG