Scientists have found a way to study early embryonic development without real embryos. Using CRISPR, they programmed stem cells to self-organize into structures mimicking early embryos. The cells show ...

The path from the initial discovery of sex chromosomes ... Henking noticed that some wasp sperm cells had 12 chromosomes, while others had only 11 chromosomes. Also, during his observation of ...

New work from UC Davis and the University of Utah shows how the 3D structure of DNA inside a germ cell commits it to develop into a sperm cell. The discovery could improve understanding of fertility ...

Meiosis, as described above, is the process by which certain sex cells are created. If you're male, your body uses meiosis to create sperm cells; if you're female, it uses meiosis to create egg cells.

Two new studies show how a seeming tangle of DNA is actually organized into a structure that coordinates thousands of genes to form a sperm cell. The work, published as two papers in Nature Structural ...

Zinc (found in oysters, beef, and pumpkin seeds) serves as a building block for sperm cells. Selenium (from Brazil ... foundation for success. While the path may differ from originally envisioned ...

The final phase, spermatogenesis, culminates in the production of mature sperm cells capable of ... the entire developmental pathway of male germ cells from pluripotent stem cells.

In a study of early embryonic development in primates, an international research team under the leadership of Berthold ...

A research team has uncovered how a naturally occurring biological mechanism found in mammals is able to prevent sperm cells from interacting with an egg, preventing fertilization. The discovery, ...

Researchers showed how what appears to be a tangle of DNA is actually organized into a structure that coordinates thousands of genes to form a sperm cell. The work, published as two papers in ...

But while the embryo is still snug in the womb, its bipotent cells commit to one path or another and once they cross that threshold, they cannot go back. Defining the gene targets of ZBTB16.