Sperm cells have undergone an extraordinarily divergent evolution among metazoan animals.Parker recognized that because female animals frequently mate with more than Biscuits one male, sexual selection would continue after mating and impose strong selection on sperm cells to maximize fertilization success.Comparative analyses among species have rev
Multiple sclerosis (MS) is a chronic inflammatory, demyelinating, and neurodegenerative disease in the central nervous system (CNS).Its pathogenesis is quite complex: Accumulated evidence suggests that biochemical signals as well as mechanical stimuli play important roles in MS.In both patients and animal models of MS, brain viscoelasticity is redu
The purpose of the study: theoretical and analytical substantiation of factors affecting the level of quality management of services of railway transport enterprises in Ukraine.The article analyzes the main scientific works of domestic and foreign scientists regarding the determination of the factors affecting the level of service quality managemen
Abstract Promiscuous females reduce male reproductive control.Males can attempt to monopolise access to these females, but distractions and sneaky rivals mean extra copulations cannot always be blocked.By mating first, males can obtain a headstart in sperm competition, but this may be negated by sperm storage and cryptic female choice mechanisms.We