Shared meiosis proteins show surprising functional differences across animals
Every egg cell and sperm cell depends on meiosis, a tightly choreographed process in which chromosomes find their…
Human Sperm Is Rewriting DNA Earlier Than We Realized
Some genetic variation in sperm may begin earlier in development than scientists previously recognized. New evidence suggests that…
Paternal sperm epigenetics may help explain early pregnancy loss
When a pregnancy ends early and unexplained, the search for answers usually begins with the mother. Lacey Luense,…
Satellite DNA acts as a barcode for matching chromosome pairs
The body cells of humans and animals contain a double set of chromosomes. One half of the genetic…
Cooperative sperm may improve fertilization success across diverse arthropods
Fertilization is often imagined as a frantic race, with millions of sperm competing for a single prize. But…
Father’s diet before conception impacts baby’s body composition
A father’s diet can affect his children’s health and body composition before they are even conceived. A study…
Fruit Fly Sperm Is 40 Times Longer Than Human Sperm and Uses Opposite Lanes to Avoid Tangling
Credit: ZME Science. These insects probably have the largest sperm-to-body-size ratio. A male fruit fly’s sperm is nearly…
Frozen embryo transfers dominate assisted reproduction across Europe
More than 1.15 million assisted reproductive technology (ART) treatment cycles were reported across Europe in 2023, according to…
Researchers advance fertility options for childhood cancer survivors
Researchers at Karolinska Institutet have demonstrated that it is possible to create early germ cells from preserved testicular…
Base editing technique reveals crucial gene for early human development
Research led by the University of Cambridge Loke Centre for Trophoblast Research has shown that a genome editing…
Scientists Discover Sperm Seem To Bypass a Fundamental Law of Physics
Human sperm cells may swim by exploiting unusual “odd elasticity” within their flagella, helping them move through highly…
Khloé Kardashian Owns Tristan Thompson’s Sperm Now
Photo-Illustration: by The Cut; Photos: Getty Images If you’re looking for something to tell your friends about at…