Measuring Earth's Age
Proposed the theory of evolution by natural selection
Who is Charles Darwin
Bones, imprints in rock, insects in tree sap
What are fossils?
When the radioactive elements of an object are measured to calculatte the age of an object
What is radioactive dating?
The environment selects a trait that increases an organisms’s chance of survival
What is Natural Selection?
Preserved remains of ancient organisms
What are Fossils
The differences in the physical traits of organisms
What is variation
Human arm bones, flipper of whale, wing of a bat
What are Homologous Structures?
Age of Earth
What is 4.6 billion years?
Exists when there is a limited amount of resources
What is competition?
Structures that are similar in anatomy but not in functionality
What is a Homologous Structure
looking at similarities between the very early stages of life
What is Comparative Embryology?
Type of rock where fossils are found
What is Sedimentary?
When more offspring are born than can survive
What is Overproduction?
New combinations of genes resulting from sexual reproduction
What is Genetic Recombination?
When evolution is slow and there are slight chances in the organism over time
What is Gradualism?
Type of Evolution that occurs to living organisms
What is Biological Evolution?
The ultimate source of genetic variation
What is mutation?
When organisms' structures have similar functions, but are not similar in the make-up.
What are Analogous Structures?
looking for similarities between the DNA of organisms
What is Comparative Biochemistry?
When the formation of new species occurs rapidly due to a sudden change in the environment
What is Punctuate Equilibrium?