1. evolution
... these changes do not affect the genetic material. Change happens in genetic material only when games are involved. In 1858, Charles Darwin introduced a theory of evolution that is accepted by almost all scientists today. His theory states that all species evolved from a few common ancestors by natural selection. Another British scientist, Alfred Wallace, introduced an identical theory at about ... . Structures like these, which meet different needs but develop from the same body parts, are called homologous structures. This is all additional evidence of descent from a common ancestor. The...
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- Grade Level: High School