The sex determination system in crabs is believed to be XY-XX from karyotypy, but centromeres could not be identified in some chromosomes and their morphology is not completely clear. Using quantitative trait locus mapping of the gender ... Z Cui,M Hui,Y Liu,... - 《Heredity》 被引量:...
Recently, the influence of the XX vs. XY sex chromosome complement on immune cell activation has become increasingly appreciated. The X chromosome encodes for a large number of immune-related genes, as well as epigenetic regulators associated with lymphocyte activation and differentiation [15].While ...
and often present with infertility.248In most instances, theSRYgene is located on anX chromosomebecause of recombination between the X andY chromosomes.249However, translocation to anautosomecan occur. One example was theincidental findingsmall testes,azoospermia, and translocation of theSRYgene onto ...
For these reasons, the genus serves as an excellent model for studies on evolution of reproductive systems, sex-determining mechanisms and sex chromosomes in plants. The phylogenetic analyses demonstrated that species with heteromorphic sex chromosomes are clustered in two Rumex subgenera, Acetosa and ...
and Y chromosomes. Two-thirds of XX males have detectable Y chromosomal sequences in the distal region of the X chromosome. Some XX males have a mosaic pattern of expression, with a few cell lines expressing 46,XY and the rest expressing 46,XX. Interestingly, all known XX males with ...
46,XX testicular disorder of sex development is a rare genetic syndrome, characterized by a complete or partial mismatch between genetic sex and phenotypic sex, which results in infertility because of the absence of the azoospermia factor region in the long arm of Y chromosome. Case presentation ...
Gender in plants: sex chromosomes are emerging from the fog. Although most plants have flowers with both male and female sex organs, there are several thousands of plant species where male or female flowers form on d... B Vyskot,R Hobza - 《Trends in Genetics》 被引量: 378发表: 2004年...
The primary sex-determining signal in the nematode C. elegans is the ratio of X chromosomes to sets of autosomes (X/A ratio). As a consequence, males (XO; ... BJ Meyer,LP Casson - 《Cell》 被引量: 290发表: 1986年 Chromosome abnormalities and spontaneous fetal death following amniocentesi...
testicular tissue is present. The same is true if all cells have XY chromosomes but the Y is incomplete, missing all or part of its long or short arms. Children with an ovotesticular disorder of sexual development have both testicular and ovarian tissue present, either as separate gonads or ...
Medaka has an XX/XY sex determination system, and the sex-determining gene dmy (also known as dmrt1bY) has been identified on the medaka Y chromosome (Matsuda et al. 2002). Medaka is therefore a suitable model vertebrate for the genetic analysis of sex deter- mination and differentiation...