Reference Terms
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Spermatozoon
A spermatozoon or spermatozoan (pl. spermatozoa), and more commonly known as a sperm cell, is the haploid cell that is the male gamete.
Note: The above text is excerpted from the Wikipedia article "Spermatozoon", which has been released under the GNU Free Documentation License.
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Plants & Animals News
December 1, 2024
Nov. 28, 2024 — More than a million years ago, on a hot savannah teeming with wildlife near the shore of what would someday become Lake Turkana in Kenya, two completely different species of hominins may have passed ...
Nov. 27, 2024 — Researchers have been able to identify undigested food remains, plants and prey in the fossilized feces of dinosaurs. These analyses of hundreds of samples provide clues about the role dinosaurs played in the ecosystem around 200 million years ...
Nov. 19, 2024 — Leveraging a unique statistical analysis and applying it to ancient DNA extracted from human skeletal remains, a team of researchers has revealed new insights into how ancient Europeans adapted to their environments over 7,000 years of European ...
Nov. 18, 2024 — A newly discovered pterosaur fossil is shedding light on the evolutionary journey of these ancient flying reptiles. This complete specimen, named Skiphosoura bavarica, provides crucial insights into how pterosaurs transitioned from early, smaller ...
Latest Headlines
updated 12:56 pm ET
Nov. 26, 2024 — Researchers have identified a new axis of host defense by studying what happens during enteric infection -- a term that encompasses all types of intestinal infections including so called 'stomach ...
Nov. 28, 2024 — The increased use of a chemical compound to replace TNT in explosive devices has a damaging and long lasting effect on plants, new research has ...
Nov. 29, 2024 — Bacteria modify their ribosomes when exposed to widely used antibiotics, according to new research. The modified ribosomes have changes specifically in the regions where antibiotics latch on to and ...
Nov. 29, 2024 — Some animals, such as the starlet sea anemone, can regenerate large parts of their body, even after major injuries. Researchers have shown this regeneration response involves cells and molecules in ...
Nov. 28, 2024 — Coral adaptation to ocean warming and marine heatwaves will likely be overwhelmed without rapid reductions of global greenhouse gas emissions, according to an international team of ...
Nov. 28, 2024 — An international team of scientists have used advanced microscopy to image how ribosomes recruit to ...
Nov. 26, 2024 — New research has found that the number and type of microbes present in the saliva of pregnant women differ according to whether they are experiencing ...
Nov. 26, 2024 — A multinational collaboration has uncovered a potential explanation for why some cancer patients receiving a type of immunotherapy called checkpoint inhibitors experience increased susceptibility to ...
Nov. 25, 2024 — A 16-year study on a closed population of Seychelles warblers (Acrocephalus sechellensis) on Cousin Island, Seychelles, has uncovered significant findings about how environmental factors -- ...
Nov. 29, 2024 — A new study has provided further evidence that the deaths of 350 African elephants in Botswana during 2020 were the result of drinking from water ...