As cricket blastoderms form, cell nuclei are pulled into an egg’s remaining empty space to form the new cell layers that will shape the developing animal.

Cloning and parthenogenesis of humans wouldn’t align with bioethical principles.

Mintz’s experiments over her six-decade career were foundational to cancer and genetics research.

The primitive streak, a structure that emerges during mammalian and avian gastrulation, might be a byproduct rather than a landmark of the embryonic development process.

Across the tree of life, animals use sound and other vibrations to glean valuable sensory information about their environments even before they are born.

Watch and listen to reptiles, amphibians, insects, and birds respond to sound from inside their eggs.

A combination of approaches, including uterus transplantation and the joining of two animals’ circulatory systems, allowed males to bear pups, according to a preprint. But some experts say the experiments were not justified.  

Wolpert, who conducted research at University College London, was known for his work on morphogenesis and pattern development in embryos and for his multiple books and broadcast appearances.

The International Commission on the Clinical Use of Human Germline Genome Editing claims the technology is still too risky for therapeutic use.

Without a brain, the frog embryo immune system doesn’t receive the signals it needs to mobilize macrophages and fight infections.

Florence Sabin was known for her pioneering research and efforts to support women in science.

The modification of three babies’ genes by He Jiankui drew widespread criticism from scientists.

From bubbling plants to endangered whales, here are some amazing images from The Scientist in 2019.

Extended pluripotent stem cells from mice can self-organize to form blastocyst-like structures called blastoids that enable a closer look at early mammalian development.

The researchers aim to grow transplantable human organs from primate embryos.

In a species of freshwater turtle, embryos can move toward warmer or cooler environments within the egg and thus help choose their sexual destiny, but not all experts are convinced.

After the reported birth of CRISPRed babies in China, experts want to take time to consider the scientific, social, ethical, and philosophical consequences of editing heritable human DNA.

The extremely rare event, thought to be caused by two sperm cells fertilizing the same egg simultaneously, was last reported in 2007.