Abstract
Sex chromosomes in Oncopeltus fasciatus and Pyrrhocoris apterus are heterochromatic and transcriptionally inactive in well-defined phases of development. In Oncopeltus, which has the XX/XY type of sex determination, the Y-chromosome seems to be inactive in aE tissues. The X-chromosome is inactivated during the last spermatogonial division and remains so throughout spermatogenesis. The X-chromosome of Pyrrhocoris, which is of the XX/XO type of sex determination is inactive in the same stages as that of Oncopeltus and during an additional phase in early oogenesis. X inactivation in spermatogenesis is interpreted as a form of gross regulation of gene activity on the chromosomal level.
| Original language | English |
|---|---|
| Journal | Caryologia |
| Volume | 28 |
| Issue number | 4 |
| Pages (from-to) | 501-510 |
| Number of pages | 10 |
| ISSN | 0008-7114 |
| DOIs | |
| Publication status | Published - 01.01.1975 |
Research Areas and Centers
- Academic Focus: Center for Infection and Inflammation Research (ZIEL)