If you are familiar with the subject, you already know that the answers to the above, and many others, is that “contrary to popular opinion” NO, he did nothing like that! Nothing even close to that.
He is credited for originating the “Natural Selection” Theory that culls out the deficient in an specie.
Well, how about evolution being the “average” of the parents? Yes, Darwin held that view but Nature does not.
And, get this, Father Mendel had actually conducted statistical studies that proved the opposite!
And, he sent a copy of his work to Darwin, himself.
And, a copy of Father Mendel was found, annotated, among Darwin’s books -which he never acknowledge.
He changed his mind and adopted three, contradictory, evolution schemes.
The theory of “struggle for survival” Darwin used was described in Rev. Thomas Malthus’s [1755-1834] Essay on the Principle of Population as It Affects the Future Improvement of Society [London, 1798!].
Darwin, thought evolution of new species was the result of either:
(1) divergences accumulated and produced a new species -all at once. [This is partially true and work continues.]
(2) Driven by tendency and wish, the hypothesis of Jean-Baptiste de Lamarck [1744-1829] (no self-respecting scientist would admit believing this);
(3) Darwin also endorsed the concept of trait averaging in offspring ignoring the opposite findings by Austrian Monk Gregor Mendel [1822-84] (his report was found in Darwin’s files). Father Mendel is the acknowledged “Father of Molecular Biology” and “Father of Molecular Genetics”. At issue was whether offsprings of a tall and a short plant would be tall, short or in-between average. Father Mendel´s data showed that it was short or tall but not in-between average, and he developed the algebraic equations.

Darwin, Linnean Society Chairman ADDED his name to Alfred Russel Wallace’s [1823-1913] seminal Theory of Evolution hypothesis of “organisms change over time” [many attribute this phrase to Darwin]-two years before Darwin’s book.

Finally, the only proof he offered that he had done some work before Wallace’s paper was, get this, a COPY he made of a personal letter he sent to a lady friend in America. The original, of course, never was found.

Darwinism is a veritable “cottage industry” to support the believers. Can you name a single new species that was predicted by The Theory of Evolution?
All the work in Evolution is to “fill in” gaps in the fossil record and then have a press conference where these highly paid scientist proclaim “Just like we Predicted!”, I guess they do not know that “predicted” means the assertion must be made BEFORE the fossil is found.
The proper, and meaningless, term is “agrees, with a prediction we would have made if we knew the fossil existed.” In kind terms.