First Mouse Embryos Made from Two FathersFirst Mouse Embryos Made from Two FathersFirst Mouse Embryos Made from Two Fathers
First Mouse Embryos Made from Two Fathers
The bipaternal pups died soon after birth, but mice with two mothers grew into fertile adults.
First Mouse Embryos Made from Two Fathers
First Mouse Embryos Made from Two Fathers

The bipaternal pups died soon after birth, but mice with two mothers grew into fertile adults.

The bipaternal pups died soon after birth, but mice with two mothers grew into fertile adults.

embryo
In Their Earliest Days, Embryos Record Their Environments
In Their Earliest Days, Embryos Record Their Environments
Kerry Grens | Oct 1, 2018
Methylation patterns at so-called metastable epialleles in the genome stamp a memory into each of our cells.
CRISPR Can Track Cellular History of a Mammalian Embryo
CRISPR Can Track Cellular History of a Mammalian Embryo
Sukanya Charuchandra | Aug 10, 2018
Researchers used the genome-editing technology to analyze the development of mouse tissues.
Doubts Arise Again About CRISPR’d Human EmbryosDoubts Arise Again About CRISPR’d Human Embryos
Doubts Arise Again About CRISPR’d Human Embryos
Kerry Grens | Aug 8, 2018
One lab finds that a similar method produces large genetic deletions when performed in mouse embryos.
These Molecules Zipper Embryos Closed
These Molecules Zipper Embryos Closed
Ashley Yeager | Aug 1, 2018
Actin rings seal off the ball of cells, aiding in implantation in the uterus. But faults in the process could explain why some pregnancies fail.
Infographic: Embryonic Zippering
Infographic: Embryonic Zippering
Ashley Yeager | Aug 1, 2018
How actin seals embryos early in development
Artificial Mouse Embryo Made in a Laboratory
Artificial Mouse Embryo Made in a Laboratory
Sukanya Charuchandra | Jul 25, 2018
The embryo, grown in a dish from several types of stem cells, went through gastrulation, a significant stage in development.
Bioethics Council: Gene-Editing Human Embryos Conditionally OK
Bioethics Council: Gene-Editing Human Embryos Conditionally OK
Shawna Williams | Jul 17, 2018
The UK-based organization encourages public debate about the issue but does not recommend immediate policy change.
Animals’ Embryonic Organizer Now Discovered in Human Cells
Animals’ Embryonic Organizer Now Discovered in Human Cells
Jim Daley | May 23, 2018
The finding confirms that a cluster of cells that directs the fate of other cells in the developing embryo is evolutionarily conserved across the animal kingdom.
Image of the Day: <em>Xenopus</em> Pigment
Image of the Day: Xenopus Pigment
The Scientist Staff | May 18, 2018
Researchers recently used CRISPR single-guide RNAs to alter genes involved in pigmentation in frog embryos.