The absence of specified sex chromosome (Y, X, W or Z) in the sex chromosome system. This creates usually the following sex chromosome systems: ♂X0/♀XX, ♂ZZ/♀Z0 (Y or W lost), or ♀W0/♂00, ♂Y0/♀00 (a B chromosome became Y or W). Other sex chromosome systems which fit the category are X1X20 (and many more similar devivatives with varied number of different Xs) in spiders (created presumably by X nondisjunctions), or X0/X0 sex chromosome system found in some mammals (e.g. Tokudaia osimensis).
Suggested parent term
karyotype
genotype
genomic genotype
heterogametic sex genotype
sex determination
sex chromosome GO:0000803
Attribution
0000-0003-4441-9615
Additional context
Suggested literature:
Green, D.M. Cytogenetics of the endemic New Zealand frog, Leiopelma hochstetteri: extraordinary supernumerary chromosome variation and a unique sex-chromosome system. Chromosoma 97, 55–70 (1988). https://doi.org/10.1007/BF00331795
Kořínková, T., Král, J. (2013). Karyotypes, Sex Chromosomes, and Meiotic Division in Spiders. In: Nentwig, W. (eds) Spider Ecophysiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33989-9_12
Imarazene, B., Du, K., Beille, S., Jouanno, E., Feron, R., Pan, Q., ... & Guiguen, Y. (2021). A supernumerary “B-sex” chromosome drives male sex determination in the Pachón cavefish, Astyanax mexicanus. Current Biology, 31(21), 4800-4809. https://doi.org/10.1016/j.cub.2021.08.030
Jonika, M. M., Alfieri, J. M., Sylvester, T., Buhrow, A. R., & Blackmon, H. (2022). Why not Y naught. Heredity, 129(2), 75-78. https://doi.org/10.1038/s41437-022-00543-z
Terao, M., Ogawa, Y., Takada, S., Kajitani, R., Okuno, M., Mochimaru, Y., ... & Kuroiwa, A. (2022). Turnover of mammal sex chromosomes in the Sry-deficient Amami spiny rat is due to male-specific upregulation of Sox9. Proceedings of the National Academy of Sciences, 119(49), e2211574119. https://doi.org/10.1073/pnas.2211574119
Code of Conduct
[X] I agree to follow this project's Code of Conduct
In which category is your new term request?
Preferred term label
0
Synonyms
No response
Textual definition
The absence of specified sex chromosome (Y, X, W or Z) in the sex chromosome system. This creates usually the following sex chromosome systems: ♂X0/♀XX, ♂ZZ/♀Z0 (Y or W lost), or ♀W0/♂00, ♂Y0/♀00 (a B chromosome became Y or W). Other sex chromosome systems which fit the category are X1X20 (and many more similar devivatives with varied number of different Xs) in spiders (created presumably by X nondisjunctions), or X0/X0 sex chromosome system found in some mammals (e.g. Tokudaia osimensis).
Suggested parent term
karyotype genotype genomic genotype heterogametic sex genotype sex determination sex chromosome GO:0000803
Attribution
0000-0003-4441-9615
Additional context
Suggested literature:
Green, D.M. Cytogenetics of the endemic New Zealand frog, Leiopelma hochstetteri: extraordinary supernumerary chromosome variation and a unique sex-chromosome system. Chromosoma 97, 55–70 (1988). https://doi.org/10.1007/BF00331795
Kořínková, T., Král, J. (2013). Karyotypes, Sex Chromosomes, and Meiotic Division in Spiders. In: Nentwig, W. (eds) Spider Ecophysiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33989-9_12
Imarazene, B., Du, K., Beille, S., Jouanno, E., Feron, R., Pan, Q., ... & Guiguen, Y. (2021). A supernumerary “B-sex” chromosome drives male sex determination in the Pachón cavefish, Astyanax mexicanus. Current Biology, 31(21), 4800-4809. https://doi.org/10.1016/j.cub.2021.08.030
Jonika, M. M., Alfieri, J. M., Sylvester, T., Buhrow, A. R., & Blackmon, H. (2022). Why not Y naught. Heredity, 129(2), 75-78. https://doi.org/10.1038/s41437-022-00543-z
Terao, M., Ogawa, Y., Takada, S., Kajitani, R., Okuno, M., Mochimaru, Y., ... & Kuroiwa, A. (2022). Turnover of mammal sex chromosomes in the Sry-deficient Amami spiny rat is due to male-specific upregulation of Sox9. Proceedings of the National Academy of Sciences, 119(49), e2211574119. https://doi.org/10.1073/pnas.2211574119
Code of Conduct