(Science: botany) a change in the character of a cell wall, by which it becomes harder. It is supposed to be due to an incrustation of lignin. Origin: cf. F. Lignification. See lignify. The depositing of lignin in cell walls by plants that creates wood...
Meiosis is a form of cell division that creates gametes. It is comprised of two divisions that in the end, the resulting..
It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..
The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..
This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..
