Evidence of Evolution

Four Main Types of Evidence _______

Fossil Record Fossils are evolutionary _______ Fossils show that ancient species share _______ with species that _______ live on Earth. Fossils records provide evidence that living things have _______ over time. Glyptodont Armadillo

Traits _______ _______ newly evolved features, such as feathers, that do not appear in the fossils of common ancestors. primitive features, such as teeth and tails, that do appear in ancestral forms.

Comparing Anatomy _______ structures _______ structures

Homologous structures Anatomically _______ structures inherited from a _______ ancestor These structures can be similar in _______ and/or function.

Analogous Structures Structures that _______ have a common evolutionary origin but are similar in _______. Shows that _______similar features can evolve _______ of each other Ex: wing of an _______ and wing of _______

Analogous Structures

Vestigial Structures A body structure that has _______ in a present-day organism but was probably useful to an _______. This shows a change over time

Chapter 15 Evolution

Comparing Embryos _______: the earliest stage of growth and development of both plants and animals Vertebrate embryos exhibit _______ structures during certain _______ of development but become totally _______ structures in the _______ forms.

Comparing Embryos Similar embryo development may suggest a common ancestor

Biochemical Evidence Common _______ can be seen in the complex metabolic _______ that many different organisms _______. Comparison of the _______ or _______ of different species produce biochemical evidence for evolution

Biochemical Evidence Comparisons of the similarities in _______ _______and other molecules across species reflect evolutionary patterns seen in _______ anatomy and in the _______ record.

Geological Distribution _______ animals are found in _______ locations around the world. Animals ended up _______ similar features for their environment because of their _______ on earth They look the _______ but live in different areas

Knowledge Check True or False Organisms with similar anatomy share similar DNA sequences.

Knowledge Check analogous structures embryological structures Which features are similar in use and evolve in similar environments, but do not evolve from a common ancestor? analogous structures embryological structures homologous structures vestigial structures

Knowledge Check Which of the following best explains how the fossil record provides evidence that evolution has occurred? A It indicates the exact cause of structural and behavioral adaptations of organisms. B It shows that the form and structure of groups of organisms have changed over time. C It shows how the embryos of many different vertebrate species are very similar. D It indicates that forms of life existed on Earth at least 3.5 billion years ago.

Knowledge Check The occurrence of the same blood protein in a group of species provides evidence that these species a. evolved in the same habitat. b. evolved in different habitats. c. descended from a common ancestor. d. descended from different ancestors.

Knowledge Check a tail bones feathers teeth Which is an example of a derived trait? a tail bones feathers teeth