Ancient viral DNA long thought extinct is active during early embryo growth, steering gene expression and shaping development across mammals. (CREDIT: Adobe Stock)© The Brighter Side of News ...

A team of scientists have announced that they have successfully edited DNA in human embryos and that editing has allowed them to make what they call a fundamental discovery about the earliest days ...

Among genetically identical "agouti viable yellow" (Avy) mice, some are brown and lean while others are yellow and obese.

The ability of CRISPR gene-editing technology to safely modify human embryos has been cast into doubt after several recent papers described massive disruptions to DNA in embryos subjected to editing.

Divergent DNA methylation dynamics in marsupial and eutherian embryos. Nature, 2025; DOI: 10.1038/s41586-025-08992-2 ...

For the first time, scientists have edited the DNA in human embryos to make a fundamental discovery about the earliest days of human development. By modifying a key gene in very early-stage embryos, ...

Photo by Christoph Bock/Max Planck Institute for Informatics July 19 (UPI) -- New research suggests DNA methylation and transposons can help explain the genetic origins of serious human diseases.

By examining embryos from several mammals, the team discovered that ancient viral sequences hidden in DNA, long thought to be extinct, come back to life during early development.