Results 181 to 190 of about 68,636 (335)

Mating system variation and gene expression in the male reproductive tract of Peromyscus mice

open access: yesMolecular Ecology, EarlyView.
Abstract Genes involved in reproduction often evolve rapidly at the sequence level due to postcopulatory sexual selection (PCSS) driven by male–male competition and male–female sexual conflict, but the impact of PCSS on gene expression has been under‐explored.
Erin R. Voss, Michael W. Nachman
wiley   +1 more source

Oviduct topography and irrigation in the bullfrog Lithobates catesbeianus (Shaw, 1802)

open access: yesBiotemas, 2014
The bullfrog (Lithobates catesbeianus) is a species native to North America. It can reach about 20 cm in length and a body weight of 500 g. We used 30 adult frogs of the species Lithobates catesbeianus laying eggs to observe the oviduct. The animals were
Marcela Cristina Lisboa   +3 more
doaj  

Oviduct [PDF]

open access: yes, 2009
Histology blog entry for February 8, 2009 about ...
Krause, William J., II, 1942-
core  

Sexual Selection on Non‐Ornamental Traits Is Underpinned by Evidence of Genetic Constraints on Sex‐Biased Expression in Dusky Pipefish

open access: yesMolecular Ecology, EarlyView.
ABSTRACT Species lacking distinct secondary sex characteristics, such as differences in size or morphology, are often thought to experience lower levels of sex‐specific selection in comparison to highly sexually dimorphic organisms. However, monomorphism in classic visible traits could be a result of genetic or physiological constraints that prevent ...
Nicole M. Tosto   +4 more
wiley   +1 more source

Functional Characterization and Heterogeneity Analysis of Ribosomal Proteins in Mouse Preimplantation Embryos

open access: yesThe FASEB Journal, Volume 39, Issue 11, 15 June 2025.
We selected and investigated six ribosomal proteins in the early mouse embryo. Knocking down these ribosomal proteins generally had inhibitory effects on the morula‐to‐blastocyst transition, but the details and degree of these effects varied. This provides a new example of ribosome heterogeneity in preimplantation embryos.
Seung Jae Lee   +5 more
wiley   +1 more source

Tmx2 Maintains Mitochondrial Function to Support Preimplantation Embryogenesis

open access: yesThe FASEB Journal, Volume 39, Issue 11, 15 June 2025.
TMX2 is a member of the thioredoxin‐related transmembrane protein family. It exhibits specific expression in mouse preimplantation embryos, and its subcellular localization is closely associated with mitochondria. Knockdown of Tmx2 in embryos results in a reduction in mitochondrial number, a decline in mitochondrial membrane potential, and an elevation
Shangrong Zhang   +15 more
wiley   +1 more source

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