X0 Sex-determination System
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High Quality Content by WIKIPEDIA articles! The X0 sex-determination system is a system that hymenopterans, grasshoppers, crickets, cockroaches, and some other insects use to determine the sex of their offspring. In this system, there is only one sex chromosome, referred to as X. Males only have one X chromosome (X0), while females have two (XX). The zero (sometimes, the letter O) signifies the lack of a second X chromosome. Maternal gametes always contain an X chromosome, so the sex of the animals' offspring is decided by the male. Its sperm normally contain either one X chromosome or no sex chromosomes at all. In a variant of this system, certain animals are hermaphroditic with two sex chromosomes (XX) and male with only one (X0). The model organism Caenorhabditis elegans a nematode frequently used in biological research is one such organism. Some Drosophila species have X0 males. These are thought to arise via the loss of the Y chromosome.
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GarantieWeitere Informationen
- Allgemeine Informationen
- GTIN 09786130488772
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- EAN 9786130488772
- Format Fachbuch
- Titel X0 Sex-determination System
- Herausgeber Betascript Publishing
- Anzahl Seiten 68
- Genre Biologie
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