Please choose the correct answer to the question: Researchers recently discovered a gene in humans that previously was unknown to science. Which statement best explains why the gene probably was not discovered much sooner?

Answer1: The gene only recently evolved in humans. Answer2: The technology used to study genes is still being developed. Answer3: Scientists were not interested in genes until a few years ago. Answer4: Scientists were sure they had already discovered every possible gene.

Answer format: answer1/answer2/answer3/answer4