Theories of Origins
Scientists try to explain our "beginnings"
What is origins?
Information that can be observed and recorded
Observable data
The study of the evolutionary relationships among organisms
What is phylogenetics?
Idea that life came from nonliving things
What is abiogenesis?
The idea that life began somewhere else.
What is exogenesis?
Species on earth have never changes once they appeared
Scientists select the simplest phylogenetic tree that requires the fewest evolutionary changes
parsimony
Our current classification system
What is systematics?
DAILY DOUBLE
Redi's experiment with the three jars and meat help disprove this idea of life coming from nothing.
Spontaneous Generation
Some body parts appear to have no function
What is Vestigial structures?
A diagram that evolutionary scientists use to show the relationship between organisms and that evolution happened.
What is phylogenetic trees?
Certain individuals within a species are better suited for surviving in their environment
What is adaptation?
Experiment that attempted to create organic materials, such as amino acids, from gases and electrical charges
What is the Miller-Urey Experiment?
Daily DOUBLE
Ideas are based on assumptions accepted as true
Theories of origin of life
This theory supports the idea that phylogenetics says species with similar genes are closely related supports which theory
Evolution/evolutionary scientists
Similar in structure but different in function
What is homologous?
What are some of the issues with Miller-Urey Experiment?
Many of the molecules produced were not useful for creating life and were sometimes even destructive.
Some processes responsible for generating amino acids and molecules could break them down even faster.
Opinions about what Earth's atmosphere was actually like continue to change.
Amino acids are mirror images of each other. In living things they are all left handed. In the experiment they were left and right handed.
A whale flipper and a dog's leg are similar in structure, but the whale's flipper is used for swimming and dog's leg for running and swimming.
What is Homologous structure?
From a creationists perspective, what is the purpose of the phylogenetic tree? How is this different from an evolutionary perspective?
The Creationist perspective is that the tree is used to show which organisms are more similar. It shows which traits are shared by multiple organisms. Form an evolutionary perspective, the tree infers that shared traits result from a common ancestor.
Structures that are similar in construction but have different functions compared to Different structures that have the same function
What is homologous structures vs analogous structures?