Biologists have created pigs, goats and mice whose testicles produce the sperm of a different male and which breeders could use to pass on desirable traits to many more offspring than normally possible Source: https://www.newscientist.com/article/2254419-cloned-testicles-let-goats-father-the-offspring-of-another-male/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Tag: sperm
Mysterious evolution of wonky whale skulls
How we worked out when whales first evolved asymmetrical skulls. Source: https://earthsky.org/earth/whale-asymmetrical-skull-evolution…
Sperm have a weird way of swimming and we only noticed after 300 years
For 300 years we’ve assumed sperm swim by beating their tails symmetrically, but in reality sperm rotate like a corkscrew while beating their tails asymmetrically Source: https://www.newscientist.com/article/2250415-sperm-have-a-weird-way-of-swimming-and-we-only-noticed-after-300-years/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Sperm don’t swim anything like we thought they did, new study finds
New high-speed video reveals human sperm don’t swim like we thought. Source: https://www.livescience.com/sperm-swim-like-corkscrews.html
Lab-grown sperm could let infertile men have gene-edited children
The first reliable way of isolating and growing sperm stem cells could lead to new fertility treatments, including correcting mutations that block sperm production Source: https://www.newscientist.com/article/2248668-lab-grown-sperm-could-let-infertile-men-have-gene-edited-children/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Sperm swim up to 70 per cent faster when they have a lazy tail
Some sperm don’t use the final few micrometres of their tail to move, but simulations show they may actually swim faster than others that do, which could help pave the way for improved fertility tests Source: https://www.newscientist.com/article/2248614-sperm-swim-up-to-70-per-cent-faster-when-they-have-a-lazy-tail/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
CRISPR Gene Editing In Human Embryos Wreaks Chromosomal Mayhem
A suite of experiments that use the gene-editing tool CRISPR-Cas9 to modify human embryos have revealed how the process can make large, unwanted changes to the genome at or near the target site. Nature reports: The first preprint was posted online on June 5 by developmental biologist Kathy Niakan of the Francis Crick Institute in London and her colleagues. In that…
‘Exploding Whale Memorial Park’ honors whale that went out with a bang
A new park in Oregon gets its name from an explosive event in 1970: the dynamiting of a dead, beached sperm whale. Source: https://www.livescience.com/exploding-whale-park-oregon.html
Seminal fluid, not just sperm, can influence offspring’s survival
It’s not just about the sperm: the semen of male fish carries unidentified substances that influence how quickly the offspring develop and even how well they can swim Source: https://www.newscientist.com/article/2232134-seminal-fluid-not-just-sperm-can-influence-offsprings-survival/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Why are whales big, but not bigger?
How did whales that feed on tiny prey evolve into the largest creatures on Earth? And why don’t they get even bigger? Source: https://earthsky.org/earth/why-are-whales-big…