Van IJken utilized microscopes to capture a time-lapse footage of the alpine newt’s metamorphosis from a solitary zygote to a hatched larvae. The six-minute film showcases every phase of embryogenesis, as confirmed by IJken.
The initial stage involves the zygote undergoing multiple rounds of cleavage, whereby a single cell divides into smaller cells, without a surge in mass.
After this stage, the embryo has produced so many cells that multiplies its cells that result in the formation of a blastula, a spherical cluster of cells.