Results 21 to 30 of about 726,910 (390)
Molecular Analysis of DPY19L2, PICK1 and SPATA16 in Italian Unrelated Globozoospermic Men
Life, 2021 This study aims to evaluate genetic contribution and sperm DNA fragmentation (SDF) in a cohort of 18 unrelated globozoospermic Italian men (Group G). Semen samples were assessed according to the WHO 2010 Laboratory Manual and compared with 31 fertile ...
Fabiana Faja +7 more
doaj +1 more source
International Journal of Molecular Sciences, 2020 Sperm cryopreservation represents a powerful tool for livestock breeding. Several efforts have been made to improve the efficiency of sperm cryopreservation in different ruminant species.
P. Peris-Frau +6 more
semanticscholar +1 more source
Biomedicines, 2022 Virilization of gender-incongruent subjects to whom were assigned the female gender at birth (AFAB) is achieved through testosterone administration. Inter-individual differences in the timing and acquisition of phenotypic characteristics, even if the ...
Francesco Pallotti +12 more
doaj +1 more source
The evolution of sperm morphometry in pheasants [PDF]
, 2007 Postcopulatory sexual selection is thought to be a potent evolutionary force driving the diversification of sperm shape and function across species. In birds, insemination and fertilisation are separated in time and sperm storage increases the duration
Birkhead, T.R. +5 more
core +3 more sources
Current Biology, 2012 (Uploaded by Plazi for the Bat Literature Project) No abstract provided.
Teri J. Orr, Marlene Zuk
openaire +3 more sources
Reproductive Biology and Endocrinology, 2022 Background Previous research has shown that the type and duration of erotic material that men have access to during masturbation can influence semen parameters.
Daniel Rosenkjær +3 more
doaj +1 more source
Sperm storage by males causes changes in sperm phenotype and influences the reproductive fitness of males and their sons [PDF]
, 2017 Recent studies suggest that environmentally induced effects on sperm phenotype can influence offspring phenotype beyond the classic Mendelian inheritance mechanism.
Adriaenssens +54 more
core +1 more source
Investigative Genetics, 2014 Copenhagen is as flat as the proverbial pan-cake. A good way to appreciate this is to visit the Rundetaarn, a 35 m tower whose summit is reached by a spiral ramp designed in the 17th century to accommodate a horse and cart carrying books to its elevated library, and in more recent times inviting the competitive attention of puffing middle-aged blokes ...
openaire +4 more sources
Sperm competition and the evolution of sperm design in mammals [PDF]
BMC Evolutionary Biology, 2011 AbstractBackgroundThe influence of sperm competition upon sperm size has been a controversial issue during the last 20 years which remains unresolved for mammals. The hypothesis that, when ejaculates compete with rival males, an increase in sperm size would make sperm more competitive because it would increase sperm swimming speed, has generated ...
Maximiliano Tourmente +3 more
openaire +5 more sources
Evolution of sperm size in nematodes: sperm competition favours larger sperm [PDF]
Proceedings of the Royal Society of London. Series B: Biological Sciences, 1999 In the free-living rhabditid nematode Caenorhabditis elegans, sperm size is a determinant of sperm competitiveness. Larger sperm crawl faster and physically displace smaller sperm to take fertilization priority, but not without a cost: larger sperm are produced at a slower rate. Here, we investigate the evolution of sperm size in the family Rhabditidae
Craig W. LaMunyon, Samuel Ward
openaire +3 more sources