Darwinian evolution, aka \"Darwinism\", was merged with population genetics in the early 1900s to produce what is now commonly referred to as: a. Neo-Lamarkianism b. orthogenesis c. mutationism d. the modern synthesis Solution Ans: A theory of the late 1800s and early 1900s, based on Lamarckism, that adaptive characteristics acquired by an organism during its lifetime could be inherited by its offspring. Ans: option a. Neo-Lamarkianism.