Evolution Flashcards
Facts
Observed or measured data that helps explain something
Theory
Interpretation of facts that has been repeatedly supported
Law
Explains how something happens using mathematical equations
Evolution
The process of change overtime
Specifically, a change in the frequency of alleles in a population over time
Charles Darwin
Father of Evolution
Proposed a mechanism for evolution: natural selection
Wrote Book: On the Origin of Species
Natural selections
Organisms that are best adapted to an environment survive and reproduce more than others
What are the two ideas about evolution?
Descent with modification, Common descent
Descent with modification
each living species has descended, with changes, from other species over time
Common descent
all living organisms are related to one another and came from one common ancestor
What evidence is there for evolution?
The fossil record, homologous body structures, vestigial structures, embryology, biochemistry
Structural adaptations
Changes to the physical features of the organism
Behavioral adaptions
Learned behaviors that help organisms to survive
Physiological adaptations
Automatic responses an organism’s body has to something
Divergent evolution
The process in which species that were once similar become dissimilar and results in a new species
Ex. Monkey, whale, pig, bird
Convergent Evolution
The process in which two distinct lineages evolve a similar characteristic of a different species
Ex. Shark, dolphin