The Origins of Yeast in Baking

Do you know how many species of yeast are used in baking? It turns out there is like one particular one that in modern times we use for tons of purposes and it's called saccharomyces cerevisiae. The medical school of Johns Hopkins University go blue jays. They say forms of yeast live all over us in particular on our skin, the most in spots where skin folds over such as the navel. We also have yeast in our fingernail beds and toenail beds in our genitals and in our mouths.