““Gregor Mendel’s years of research with green and yellow peas showed that such a thing must exist. Colors and other traits vary depending on many factors, such as temperature and soil content, but something is preserved whole; it does not blend or diffuse; it must be quantized. Mendel had discovered the gene, though he did not name it. For him it was more an algebraic convenience than a physical entity.””
![“Perhaps no order of mammals presents us with so extraordinary a series of gradations as this [step by step, from humans to apes to monkeys to lemurs] - leading us insensibly from the crown and summit of the animal creation down to creatures, from which there is but a step, as it seems, to the…” quote by Thomas Huxley](https://sms4smile.com/quotes/img-quotes/f0b/thomas-huxley-1183_animal_perhaps-no-order-of-mammals-presents-us_3051.jpg)
