Results 21 to 30 of about 17,665 (161)

Genetic and karyotype divergence between parents affect clonality and sterility in hybrids

open access: yeseLife, 2023
Asexual reproduction can be triggered by interspecific hybridization, but its emergence is supposedly rare, relying on exceptional combinations of suitable genomes.
Anatolie Marta   +11 more
doaj   +1 more source

RNA Helicase Vasa as a Multifunctional Conservative Regulator of Gametogenesis in Eukaryotes

open access: yesCurrent Issues in Molecular Biology, 2023
Being a conservative marker of germ cells across metazoan species, DEAD box RNA helicase Vasa (DDX4) remains the subject of worldwide investigations thanks to its multiple functional manifestations.
Vladimir E. Adashev   +2 more
doaj   +1 more source

Recent Research Advances in Mitosis during Mammalian Gametogenesis

open access: yesCells, 2019
Mitosis is a highly sophisticated and well-regulated process during the development and differentiation of mammalian gametogenesis. The regulation of mitosis plays an essential role in keeping the formulation in oogenesis and gametogenesis.
Jia-Hao Wang   +5 more
doaj   +1 more source

Beyond tradition: exploring the non-canonical functions of telomeres in meiosis

open access: yesFrontiers in Cell and Developmental Biology, 2023
The telomere bouquet is a specific chromosomal configuration that forms during meiosis at the zygotene stage, when telomeres cluster together at the nuclear envelope.
Alfonso Fernández-Álvarez
doaj   +1 more source

Sexual reproduction and biometry of the non-zooxanthellate papillose cup coral Paracyathus pulchellus

open access: yesFrontiers in Marine Science, 2022
Basic information on the reproductive biology of many scleractinian corals species is limited or entirely lacking, particularly from temperate zones, though it is essential for a better understanding of their ecology.
Chiara Marchini   +9 more
doaj   +1 more source

The effect of vitrified ovarian tissue autotransplantation encapsulated with hyaluronic acid hydrogen on VEGF, CD31 and CD34 gene expression in rat

open access: yesFiyz̤, 2021
Background: One of the problems after cryopreservation and ovarian tissue transplantation is ischemia followed by follicles mortality. In the present study, hyaluronic acid hydrogel was used to improve angiogenesis in vitrified ovarian tissue ...
Akhavan-Taheri M
doaj  

Thermal Plasticity of the Kelp Laminaria digitata (Phaeophyceae) Across Life Cycle Stages Reveals the Importance of Cold Seasons for Marine Forests

open access: yesFrontiers in Marine Science, 2020
Phenotypic plasticity (genotype × environment interaction) is an especially important means for sessile organisms to cope with environmental variation.
Daniel Liesner   +4 more
doaj   +1 more source

A Germline‐Specific Regulator of Mitochondrial Fusion is Required for Maintenance and Differentiation of Germline Stem and Progenitor Cells

open access: yesAdvanced Science, 2022
Maintenance and differentiation of germline stem and progenitor cells (GSPCs) is important for sexual reproduction. Here, the authors identify zebrafish pld6 as a novel germline‐specific gene by cross‐analyzing different RNA sequencing results, and find ...
Ru Zhang   +5 more
doaj   +1 more source

SPO11-C631T Gene Polymorphism: Association With Male Infertility and an in Silico-Analysis

open access: yesJournal of Family and Reproductive Health, 2016
Objective: To investigate the association of C631T single nucleotide polymorphisms in SPO11 gene with male infertilityfollowed by an in silico approach.
Mohammad Karimian   +5 more
doaj  

Generation of Artificial Gamete and Embryo From Stem Cells in Reproductive Medicine

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
In addition to the great growing need for assisted reproduction technologies (ART), additional solutions for patients without functional gametes are strongly needed.
Pu-Yao Zhang   +6 more
doaj   +1 more source

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