During embryonic development, two different cascades of genetic signals determine whether the embryo's primordial gonad will become testes or ovaries, and thus whether the embryo will develop into a male or a female. Disruptions ...
Molecular & Computational biology
Jan 4, 2023
0
64
Sexual reproduction of plants requires pollen to land on the stigma, which then germinates and grows pollen tubes through the style to deliver sperm cells to the ovule. Pollen tubes are the fastest-growing plant cells known. ...
Plants & Animals
Jan 4, 2023
0
23
Whether radiation exposure of fathers can have consequences on their children is one of the most long-standing questions in radiation biology. Using the nematode Caenorhabditis elegans as a model, Professor Dr. Björn Schumacher ...
Molecular & Computational biology
Dec 21, 2022
0
33
The cockroach, reviled around the world for its sickness-causing potential and general creepiness, now occupies an important position in the study of amber fossils thanks to research by an Oregon State University scientist.
Paleontology & Fossils
Dec 12, 2022
0
145
A trio of researchers, two from the University of California at Irvine, the third from the University of Michigan at Flint, has found that sea urchin sperm navigation is a natural implementation of extremum seeking. In their ...
A team of researchers at the University of California, San Diego, has developed a green algae capsule for delivering chemotherapy drugs to the gastrointestinal (GI) tract. In their study, published in the journal Science ...
A team of researchers at University College London's Department of Genetics, Evolution and Environment has found that drive male, stalk-eyed flies do not suffer fertility reduction, despite losing half their sperm, by increasing ...
A University of Queensland-led research group has created the world's first successful donkey embryo using in-vitro fertilization (IVF), which could save dozens of endangered donkey species.
Veterinary medicine
Nov 16, 2022
0
30
The behavior of sperm cells is due, in part, to the individual DNA make-up of these cells, rather than only to the genetics of males, finds a team of scientists. Its results, which provide a new understanding of the competition ...
Cell & Microbiology
Nov 15, 2022
0
125
Sperm cells have compact bundles of DNA, yet exactly how and why sperm cell nuclei are condensed in flowering plants has been a mystery, until now.
Plants & Animals
Nov 2, 2022
0
20
