L. Ross

The B chromosome of Pseudococcus viburni: a selfish chromosome that exploits whole-genome meiotic drive

This paper investigates the B chromosome in Pseudococcus viburni, identifying its genetic content and mechanisms that allow it to escape paternal genome elimination during meiosis.

Retention of an endosymbiont for the production of a single molecule

The paper identifies a mealybug with three endosymbionts, one contributing only two genes to produce a single essential nutrient, chorismate, highlighting extreme genome reduction in endosymbionts.

Lack of paternal silencing and ecotype-specific expression in head and body lice hybrids.

This study shows hybrid human lice males exhibit biparental gene expression, contradicting paternal genome elimination, and identifies ecotype-specific expression and maternally-biased genes.

Recent evolution of a maternally-acting sex-determining supergene in a fly with single-sex broods

The paper characterizes a recently evolved maternally-acting sex-determining supergene in Bradysia coprophila, revealing its complex structure and evolutionary dynamics.

Are asymmetric inheritance systems an evolutionary trap? Transitions in the mechanism of genome loss in the scale insect family Eriococcidae

The paper investigates whether asymmetric inheritance systems like paternal genome elimination (PGE) in Eriococcidae scale insects are evolutionary traps by examining transitions to Mendelian inheritance.

Sex-specific transcription and DNA methylation landscapes of the Asian citrus psyllid, a vector of huanglongbing pathogens.

The paper identifies the X chromosome of the Asian citrus psyllid and compares transcription and DNA methylation between male and female adults, finding sex-specific patterns and no direct link between methylation and gene expression.

Caste- and sex-specific DNA methylation in a bumblebee is associated with codon degeneracy.

The paper examines DNA methylation patterns in bumblebees, finding caste- and sex-specific methylation associated with codon degeneracy and potential mutagenic effects.

Sexual antagonism in haplodiploids

This paper develops evolutionary-genetic models of sexual antagonism in haplodiploids, finding that paternal genome elimination and inbreeding promote female-beneficial alleles, while resource competition and genetic conflicts inhibit them.

Evolution of gene-rich germline restricted chromosomes in black-winged fungus gnats through introgression (Diptera: Sciaridae)

This study identifies gene-rich germline restricted chromosomes in fungus gnats, showing they arose through introgression from a related lineage.

Gene-rich X chromosomes implicate intragenomic conflict in the evolution of bizarre genetic systems

The paper investigates the role of X chromosome gene richness in the evolution of genetic systems with paternal genome elimination, finding increased X linkage in species with such systems.

Sex, males, and hermaphrodites in the scale insect Icerya purchasi

This study confirms androdioecy in Icerya purchasi by showing rare outbreeding events between males and hermaphrodites despite self-fertilization being the primary mode of reproduction.

Sex-specific expression and DNA methylation in a species with extreme sexual dimorphism and paternal genome elimination

This study examines sex-specific DNA methylation and gene expression in the mealybug Planococcus citri, revealing distinct methylation patterns and their potential link to paternal genome elimination.

Males that silence their father's genes: genomic imprinting of a complete haploid genome

The paper analyzes parent-of-origin gene expression in mealybugs, showing paternal genome activity in somatic and reproductive tissues, and links biparental expression to elevated molecular evolution.

Intragenic Complementation of Cellulose Synthase-Like D1 alleles in Root Hair Development

This study identifies and analyzes mutations in the CSLD1 gene in Lotus japonicus, showing their effects on root hair development and suggesting a potential role in root nodule symbiosis.