نتایج جستجو برای: hermaphroditism
تعداد نتایج: 1485 فیلتر نتایج به سال:
Angiosperm sexual systems are fundamental to the evolution and distribution of plant diversity, yet spatiotemporal patterns in angiosperm their drivers remain poorly known. Using data on distributions 68453 species, we present first global maps system frequencies evaluate during Cenozoic. Frequencies dioecy monoecy increase with latitude, while hermaphrodites more frequent warm arid regions. Tr...
Most species of the nematode genus Caenorhabditis reproduce through males and females; C. elegans and C. briggsae, however, produce self-fertile hermaphrodites instead of females. These transitions to hermaphroditism evolved convergently through distinct modifications of germline sex determination mechanisms.
Hermaphroditism leads to reduced sexual selection and can result in the retention of deleterious mutations. A new study characterizes one such mutation that results in male-male copulation in nematodes, while also implicating a previously undescribed source of chemical signaling.
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