60 likes | 161 Views
Theory : Evolution by natural selection produced the diversity of organisms we observe today. Prediction : Similarities must exist between species that originated from the same ancestor. 4 pieces of evidence for evolution show ways similarities are observed….
E N D
Theory: Evolution by natural selection produced the diversity of organisms we observe today. Prediction: Similarities must exist between species that originated from the same ancestor.
4 pieces of evidence for evolution show ways similarities are observed…
1. Homologous structures- Similar anatomical features that originated in a shared ancestor. • (NOT analogous structures- features that have identical functions but different internal anatomy and different development in the embryo)
2. Vestigial structures- structuresthat are useless to an organism but are similar to functional structures of related organisms or ancestors
3. Embryology- studying the early stages of development of an organism (inside the womb or inside the egg)