Which of the following statements correctly describes the scientific relationship between Charles Darwin and Alfred Russel Wallace in developing the theory of evolution?
They worked independently in different parts of the world but developed very similar theories of natural selection at around the same time.
They worked closely together as joint researchers on board the HMS Beagle.
Wallace worked on the genetic laws of inheritance, which Darwin used to explain his theory of natural selection.
They co-authored the book On the Origin of Species in 1859 after conducting joint fieldwork in South America.