What kind of organism caused the great potato famine in ireland in the 1800s?

Just recently, most specifically last 2013, the pathogen that scientists pointed out to cause the Irish Potato Famine is the Phytophthora infestans. This specific type of fungus causes the potato blight that destroyed and infected the plant structures of the potatoes and tomatoes. The fungi was believed to be spread airborne.

Hi! after fertilization occurs, the zygote goes through mitosis and then differentiation (aka specialization of cells) to have a variety of cells that perform different functions. this allows for the creation of tissues and so on, all of which were once stem cells with no specific function.i hope i !