Results 171 to 180 of about 1,281 (216)

Barriers to reproductive treatments in Australia

Australian Journal of General Practice, 2023
Most couples in Australia want to have children but some might not attain their reproductive goals, experiencing involuntary childlessness or not reaching their desired family size. There is increased focus on helping couples achieve their reproductive goals. Identifying existing barriers, such as those related to social and societal factors, access to
Genia, Rozen, Kate, Stern, Sarah, Lensen, Alex, Polyakov   +3 more
openaire   +2 more sources

Pollen-Pistil Interactions as Reproductive Barriers

Annual Review of Plant Biology, 2021
Pollen-pistil interactions serve as important prezygotic reproductive barriers that play a critical role in mate selection in plants. Here, we highlight recent progress toward understanding the molecular basis of pollen-pistil interactions as reproductive isolating barriers.
Amanda K, Broz, Patricia A, Bedinger
openaire   +2 more sources

Condensin dysfunction is a reproductive isolating barrier in mice

Nature, 2022
Reproductive isolation occurs when the genomes of two populations accumulate genetic incompatibilities that prevent inter-breeding. Cell biological understanding of such hybrid incompatibility is limited, especially for hybrid female sterility.
Warif El Yakoubi, Takashi Akera
openaire   +2 more sources

Reproductive barrier and genomic imprinting in the endosperm of flowering plants

Genes and Genetic Systems, 2007
In flowering plants, success or failure of seed development is determined by various genetic mechanisms. During sexual reproduction, double fertilization produces the embryo and endosperm, which both contain maternally and paternally derived genomes. In endosperm, a reproductive barrier is often observed in inter-specific crosses. Endosperm is a tissue
Tetsu Kinoshita
exaly   +4 more sources

Reproductive isolation in birds: postcopulatory prezygotic barriers

Trends in Ecology & Evolution, 2007
Reproductive isolation is an important part of the speciation process. Recent studies of birds have highlighted not only the significance of postcopulatory postzygotic barriers, but also the almost complete absence of information about postcopulatory prezygotic barriers.
Birkhead, T.R., Brillard, Jean-Pierre
openaire   +4 more sources

Molecular evolution of a reproductive barrier in maize and related species

Genetics
Abstract Three cross-incompatibility loci each control a distinct reproductive barrier in both domesticated maize ( Zea mays ssp. mays ) and its wild teosinte relatives. These three loci, Teosinte crossing barrier1
Arun S Seetharam, Matthew M S Evans, Elizabeth A Kellogg   +2 more
exaly   +4 more sources

Intra- and interspecific reproductive barriers inCrocus (Iridaceae)

Plant Systematics and Evolution, 1996
The reproductive system was studied inCrocus genus (Iridaceae) following intra- and interspecific pollination, by using light and scanning electron microscopy. The results suggest that the stigma-style tract of theCrocus pistil is a mere promoter of pollen tube growth, while intra- and interspecific discrimination of compatible and incompatible pollen ...
openaire   +2 more sources

Proteomics of reproductive systems: Towards a molecular understanding of postmating, prezygotic reproductive barriers

Journal of Proteomics, 2016
Following mating and insemination, fertility is dependent on the successful execution of a complex array of morphological, physiological and molecular interactions between male and female proteins, cells and tissues. Many of these interacting components bear hallmarks of co-evolving systems and are suspected to contribute to postmating, prezygotic ...
Caitlin E, McDonough, Emma, Whittington, Scott, Pitnick, Steve, Dorus   +3 more
openaire   +2 more sources

Interspecific reproductive barriers in the tomato clade: opportunities to decipher mechanisms of reproductive isolation

Sexual Plant Reproduction, 2010
The tomato clade within the genus Solanum has numerous advantages for mechanistic studies of reproductive isolation. Its thirteen closely related species, along with four closely allied Solanum species, provide a defined group with diverse mating systems that display complex interspecific reproductive barriers.
Patricia A, Bedinger, Roger T, Chetelat, Bruce, McClure, Leonie C, Moyle, Jocelyn K C, Rose, Stephen M, Stack, Esther, van der Knaap, You Soon, Baek, Gloria, Lopez-Casado, Paul A, Covey, Aruna, Kumar, Wentao, Li, Reynaldo, Nunez, Felipe, Cruz-Garcia, Suzanne, Royer   +14 more
openaire   +2 more sources

Reproductive Barriers in Clarkia Deflexa

Brittonia, 1968
Two population groups of the California speciesClarkia dejlexa appear to have developed an effective internal barrier to gene exchange. The data indicate that this barrier is the result of genetic and cytoplasmic differences operating during the early stages of embryo development.
openaire   +1 more source