1. By: Valerie Scheirer, Tim Davis, and Aleksandra Kumor

2. How does molecular biology provide evidence of evolution? - all organisms use the same information system based on DNA and RNA (with, of course, some variations) Using these molecules, you can trace the ancestry of any group of organisms to a common ancestor. The patterns of molecular evolution are consistent with many forms of evidence, such as fossils, anatomy, etc. Most living things are similar: Either get energy through photosynthesis or through consuming green plants and other organisms that eat plants

3. Continued... Different species share the same genetic homologies as well as anatomical ones. Many groups of species share the same type of body structure (because they share a common ancestor) Example: the arms of humans, the forelegs of dogs and cats, the wings of birds, and the flippers of whales and seals all have the same types of bones. (Humerus, radius, and ulna) Conclusion: All the major chemical and anatomical similarities between living things can be most logically explained by assuming that they either share a common ancestry or that they came into existence as a result of similar natural processes.

4. Molecules that support the theory of evolution DNA HEMOGLOBIN AMINO ACIDS MYOGLOBIN

5. DNA DNA molecules are complex molecules which contain the assembly instructions for every living creature. Certain aspects of DNA have been interpreted as evidence for Darwinian evolution. DNA evidence for evolution includes mutations and genetic similarities among species. Genetic similarities between species are also interpreted as DNA evidence for evolution. The fact that human and chimp DNA are more than 96% the same is taken to mean that humans are genetically related to chimps and therefore descended from a common ancestor.

6. HEMOGLOBIN Hemoglobin is found in a wide variety of life forms and they are all very similar in structure. there are so many different sequences of amino acids that could make a functional hemoglobin molecule, we can ask why the various types of hemoglobin among vastly different creatures are so similar. Evolution provides a meaningful answer.

7. MYOGLOBIN all myoglobins have evolved from a common ancestral gene there may be three distinct origins a 'universal globin‘ 'compact globin' and an 'IDO-like globin'. In other words, all evolved from common ancesters

8. AMINO ACIDS A protein is a string of amino acids. Proteins range in size from around 50 amino acids to thousands. Proteins are involved in regulating or controlling many of the functions of a living organism. The characteristics of a protein are determined by the sequence of amino acids of which it is constructed. the same twenty amino acids are found in most kinds of living things.

9. THE END