These observations suggest that the genetic programs responsible for embryonic development were already present before the emergence of animal life, or that C. perkinsii evolved independently to ...

Scientists have observed a type of cell division in a prehistoric unicellular organism that resembles the embryonic ...

The ambition for embryo models is to provide an ethical way of understanding the earliest moments of our lives. The first weeks after a sperm fertilises an egg is a period of dramatic change ...

This embryonic development follows precise stages that are remarkably similar between animal species and could date back to a period well before the appearance of animals. However, the transition ...