Freezing embryos, women's eggs fertilized with sperm, has been done in fertility clinics for decades, but now science has improved upon freezing unfertilized eggs to use in the future. Typically ...

In 1995, a boy made medical history when scientists learned he was partly the product of parthenogenesis — a process that occurs when an offspring results from an unfertilized egg. More than two ...

A team of researchers affiliated with several institutions in China and one in the U.S. has successfully derived offspring from a single unfertilized mammalian egg—in a mouse. In their paper published ...

Jack has a degree in Medical Genetics from the University of Leicester.View full profile Jack has a degree in Medical Genetics from the University of Leicester. To us mere humans, the concept of ...

In the vast realm of insects, certain beetles, mites, and other insects—including bees, ants, and wasps—use a unique system of sex determination known as haplodiploidy. In this system, the sexual ...

Unfertilized soybean fields with lower soil fertility should be planted earlier than high fertility fields, according to a University of Illinois Urbana-Champaign study that re-evaluates longtime soil ...

Scientists have long known that the social insects in the order Hymenoptera–which includes ants, bees, and wasps–have an unusual mechanism for sex determination: Unfertilized eggs develop into males, ...

The California condor is one of the rarest birds in the world, but now it seems that nature is giving it an unexpected leg-up. Scientists have discovered two condor chicks that were born from ...

A biotech firm recently made news by claiming to have cloned human embryos in order to produce medically useful stem cells (SN: 12/1/01, p. 341: Human-cloning claim creates controversy). At the time, ...

SANTA CRUZ, CA--Scientists have long known that the social insects in the order Hymenoptera--which includes ants, bees, and wasps--have an unusual mechanism for sex determination: Unfertilized eggs ...