The artificially motorized cells may one day help fight cancers in the female reproductive tract.

New technologies reveal the dynamic changes in mouse and human embryos during the first week after fertilization.

The switch from maternal factors involves dynamic reprogramming of the zygotic genome.

Differences in the replicative advantages conferred by some mitochondrial DNA haplotypes have implications for mitochondrial replacement therapy, researchers report. 

Researchers report the first evidence that acidified waters alter the ocellated wrasse’s reproductive behavior in the wild.

Two drugs targeting a protein in sperm cause reversible infertility in male mice, providing new hope for a male contraceptive.

Scientists report for the first time that a snail’s seminal fluid proteins can suppress the mating success of the male side of its hermaphroditic partner.

Male dwarf spiders deploy sperm-blocking plugs to thwart the reproductive chances of their mate’s subsequent suitors.

The oviducts of pigs exhibit different gene expression profiles depending on their exposure to sperm with either an X or a Y chromosome, a study shows. 

New noninvasive methods of selecting the most viable embryo could revolutionize in vitro fertilization.