According to sources Darwin and Lamarck had pretty much the same idea ~ that acquired characteristics created teeny-tiny particles of inheritance that gathered in the testes, etc.
For a variety of reasons these geniuses had failed to observe that INFORMATION in this universe is carried by quanta.
More recently Lamarck's viewpoint has been partly vindicated by the discovery of exogenous DNA ~ see the study of EPIGENETICS to figure out what that's all about (besides a potential cure for homosexuality).
In Darwin's time folks still weren't sure of the "germ theory of disease" and were thrashing about figuring out how parents passed on characteristics to their children. Most of their ideas were wrong.
Darwin's other big idea was that something called "natural selection" served to change species in very small steps over very long periods of time. He had no idea that a single bacteria in the Amazon probably contributes to most speciation in the world simply by infecting bugs and changing the shapes of their reproductive organs (but I'm sure if he had he'd probably gotten arrested for doing the research).
So that's how Bill Clinton got bent.