In the earliest hours after fertilization, an embryo takes its first steps toward becoming a living organism by shedding ...

The parthenogenic, activated oocytes were rescued only when the scientists added the paternal contribution (Table 1 ... During embryonic development, somatic cells maintain monoallelic expression ...

The findings help elucidate what happens during the earliest periods in development. “I was always interested in how cells decide their fate,” Zernicka-Goetz said. In the mouse developing embryo, she ...

Development is the process by which a fertilized egg, or embryo, generates the cells, tissues, and organs of a new individual and assembles them into their proper form. Evolution produces the body ...

Early embryo development involves dramatic changes in epigenetic and transcriptional landscapes. How are these changes orchestrated in early human development? How is the oocyte reprogrammed to a ...

During early embryonic development, cellular signals dictate that we should be built with two sides, a top and bottom, and a front and back. But what genes create these signals, and how do they work?