Results 81 to 90 of about 167,232 (198)

The Functions of the Multiproduct and Rapidly Evolving \u3cem\u3edec-1\u3c/em\u3e Eggshell Gene Are Conserved Between Evolutionarily Distant Species of Drosophila [PDF]

, 2001
The Drosophila dec-1 gene encodes multiple proteins that are required for female fertility and proper eggshell morphogenesis. Genetic and immunolocalization data suggest that the different DEC-1 proteins are functionally distinct.
Badciong, James Charles, Otto, Jeffrey Michael, Waring, Gail L.   +2 more
core   +1 more source

Evolution of Phospholipase A2 in Bees and Flies

Ecology and Evolution, Volume 15, Issue 10, October 2025.
This study investigated the evolution of the PLA2 gene in bees and flies and compared the evolutionary rate between them, which denotes the toxic group and the non‐toxic group. The results showed that PLA2 was under purifying selection and that an accelerated evolution of PLA2 occurred in the toxic group when compared with the non‐toxic group ...
Siqi Yang, Minyu Wu, Ping Feng
wiley   +1 more source

Divergence of X-linked trans regulatory proteins and the misexpression of gene targets in sterile Drosophila pseudoobscura hybrids

BMC Genomics, 2022
Background The genetic basis of hybrid incompatibilities is characterized by pervasive cases of gene interactions. Sex chromosomes play a major role in speciation and X-linked hybrid male sterility (HMS) genes have been identified. Interestingly, some of
Alwyn C. Go, Alberto Civetta
doaj   +1 more source

RepeatOBserver: Tandem Repeat Visualisation and Putative Centromere Detection

Molecular Ecology Resources, Volume 25, Issue 7, October 2025.
ABSTRACT Tandem repeats play an important role in centromere structure, subtelomeric regions, DNA methylation, recombination and the regulation of gene activity. Analysis of their distribution in genomes offers a potential means for predicting putative centromere locations, which continues to be a challenge for genome annotation.
Cassandra Elphinstone, Rob Elphinstone, Marco Todesco, Loren H. Rieseberg   +3 more
wiley   +1 more source

A history of studies of reproductive isolation between Drosophila pseudoobscura and D. persimilis

Fly
Drosophila pseudoobscura and D. persimilis are a sister species pair that have been used as a model for studies of reproductive isolation and speciation for almost 100 years owing to their close evolutionary history, well characterized genetic ...
Stewart Leigh, Michael G. Ritchie
doaj   +1 more source

Comparative Genomics of Sex‐Determination‐Related Genes Reveals Shared Evolutionary Patterns Between Bivalves and Mammals, but Not Fruit Flies

Molecular Ecology, Volume 34, Issue 20, October 2025.
ABSTRACT The molecular basis of sex determination (SD), while being extensively studied in model organisms, remains poorly understood in many animal groups. Bivalves, a diverse class of molluscs with a variety of reproductive modes, represent an ideal yet challenging clade for investigating SD and the evolution of sexual systems.
Filippo Nicolini, Sergey V Nuzhdin, Fabrizio Ghiselli, Andrea Luchetti, Liliana Milani   +4 more
wiley   +1 more source

Chromatographic separation and identification of some peptides in partial hydroylsates of gelatin [PDF]

, 1953
Recently we have been engaged in a study of the chemical structure of collagen and gelatin with the object of determining the sequence of the amino acid residues in the polypeptide chains of these proteins.
Green, F. Charlotte, Honnen, Lewis, Schroeder, W. A.   +2 more
core  

Paralog‐Dependent Specialization of Paf1C Subunit, Ctr9, for Sex Chromosome Gene Regulation and Male Germline Differentiation in Drosophila

Genes to Cells, Volume 30, Issue 5, September 2025.
We show that Drosophila melanogaster genome maintains testis‐specific paralogs encoding components of the transcription regulator Paf1C. One of the paralog products, Ctr9t, forms a unique compartment within the spermatocyte nucleolus. Ctr9t acts as a suppressor of X chromosome genes and an activator of Y chromosome fertility genes, thereby ensuring ...
Toshie Kai, Jinglan Zheng, Taichiro Iki
wiley   +1 more source

Effect of competitive cues on reproductive morphology and behavioral plasticity in male fruitflies [PDF]

, 2015
Phenotypic plasticity will be favored whenever there are significant fitness benefits of responding to environmental variation. The extent and nature of the plasticity that evolves depends on the rate of environmental fluctuations and the capacity to ...
Bretman, Amanda, Chapman, Tracey, Fricke, Claudia, Westmancoat, James   +3 more
core   +1 more source

Body size evolution as a catalyst for diversification of copulation strategies and its spillover effects on genital evolution and phylogenetic divergence in terrestrial arthropods

Population Ecology, Volume 67, Issue 3, Page 191-207, July 2025.
A scenario in which divergent selection derived from ecological environments leads to genital divergence through body size evolution. Abstract To explore how ecological diversity contributes to the establishment of ecologically similar species with sexual divergence, this review focuses on body size—an environmentally influenced trait that determines ...
Yutaka Okuzaki
wiley   +1 more source