Just because a sperm is a strong swimmer doesn't necessarily mean it has the right amount of DNA, Dr. Lisa Lee told Newsweek.

A growing body of work suggests that cell metabolism — the chemical reactions that provide energy and building materials — ...

Primordial germ cells, the founder cells of the germ line, are set aside in the early animal embryo, and divide and differentiate to produce sperm and egg ... for meiosis initiation and male ...

It's commonly thought that sperm "race" to the egg, with the winner fertilizing it. But is this really the case?

While the causes are varied and range from infections to hormonal imbalances, deformities during meiosis - a specialized cell division process that creates sperm and eggs - is a leading cause. Jain's ...

They are formed in a woman's body before birth and have to be on standby for decades to possibly be fertilized one day. But as they age, they accumulate more and more DNA damage. Until now, it has ...

While the causes are varied and range from infections to hormonal imbalances, deformities during meiosis—a specialized cell division process that creates sperm and eggs—is a leading cause.

While the causes are varied and range from infections to hormonal imbalances, deformities during meiosis – a specialized cell division process that creates sperm and eggs – is a leading cause.

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 ...