To evaluate the degeneration effects of such mutations on neo-Y-linked genes, we characterized 23 gene pairs that are located in the inverted region on the neo-Y chromosome (Additional data file 1), one pair in the neo-Y 'PAR' region, and six pairs on autosomes. These genes were ...
In eukaryotes, many independent evolutionary transitions have been documented between hermaphroditic sexual systems and separate sexes (which is termed dioecy in plants and gonochorism in animals)1. Dioecious plants or gonochoristic animals are characterised by individuals of the same species but with...
This bias is commonly attributed to X inactivation in spermatogenesis but a recent paper in BMC Biology provides evidence against X inactivation in Drosophila and proposes that somatic tissue- and testis- but not ovary-specific genes tend not to be located on the X chromosome. Here, we discuss ...
- 《Proceedings of the National Academy of Sciences》 被引量: 0发表: 2021年 [Accelerated telomere erosion in schizophrenia: A literature review] Telomeres are noncoding structures consisting of DNA TTAGGG tandem repeats and associated proteins located at the end of the chromosomes. Their role is ...
In contrast to eukaryotes, the DNA in prokaryotic cells is generally present in a single circular chromosome that is located in the cytoplasm. (Recall that prokaryotic cells do not possess a nucleus.) Prokaryotic chromosomes are less condensed than their eukaryotic counterparts and don't have easily...
Transformed cells (Vero line) had an ample range of variability in chromosome numbers and morphology. Heterochromatin was located in the centromeric areas of all chromosomes. In addition, extra bands of interstitial or terminal heterochromatin were found in 6 chromosomes of the set. The appearance ...
In some cells there appears to be en masse detachment of kinetochores. Several kinetochore-bearing chromosomes were also observed to be located peripherally to the spindle. These might be associated with the genesis of aneuploidy. In one cell line an apparently new phenomenon of nuclear budding was...
A conserved repetitive DNA element located in the centromeres of chromosomes in Medicago genus Fenggao Dong.A conserved repetitive DNA element located in the centromeres of cereal chromosomes.Proceedings of the National Academy of Sciences of the ... Y Feng,Q Dou,R Liu,... - 《Genes & Genom...
The driving force for this translocation is not specified by our model, but a number of plausible alternatives have been proposed by others (reviewed in Leonard and Helmstetter, 1990). Throughout the ensuing replication and cell division, the chromosomes are located (or can move freely) within ...
the genusSalixaccording to phylogenetic incongruence between the chloroplast and nuclear trees ofSalix10,20,22. Diploid species within theSalix-clade have XY sex chromosomes on chromosome 7, whereas species in theVetrix-clade have XY or ZW sex chromosomes on chromosome 1523, with 15XY inferred as...