Newly discovered protein helps preserve egg chromosome integrity during aging
Eggs follow a very different developmental path from sperm. Once a male hits puberty, sperm cells are produced…
New mathematical method maps gene roles across different species
Background Much of what we know about biology comes from animal models, particularly mice. Applying these insights to…
Amyloid fibers help sperm deliver RNA to mouse embryos
A longstanding mystery about the genetic messages carried by sperm led researchers to investigate an unexpected component of…
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…
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,…
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…
New research explains how embryos establish germline cell boundaries
Every embryo of an organism that reproduces sexually faces an early and consequential decision: which of its cell…
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…
Study links geography to significant differences in sperm quality
A new nationwide study has found substantial regional differences in sperm quality, with men in the highest-performing region…
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…