A structure that is no longer needed/functional due to evolutionary changes.
What is a vestigial structure?
Change over time.
What is evolution?
The evolutionary process by which new species are formed.
What is speciation?
A group of organisms evolving from one common ancestor into multiple different species over time.
What is divergent evolution?
The transfer of alleles or genes from one population to another through migration.
What is gene flow?
A structure that has been passed down from the same ancestor but used for different functions.
What is a homologous structure?
A French Scientist who argued that acquired traits would be passed down to offspring and that organisms can alter their traits to survive.
Who is Jean-Baptiste Lamarck?
The divergence of two populations due to physical barriers or separation.
What is geographic isolation?
A group of organisms from different ancestors developing similar characteristics over time.
What is convergent evolution?
A change in allele frequency/the traits in a population due to a random event. (Like a tornado)
What is genetic drift?
A structure that has been evolved from separate ancestors but has the same function.
What is an analogous structure?
A British Scientist who argued that traits are passed down through natural selection, or survival of the fittest.
Who is Charles Darwin?
The divergence of two populations due to differences in mating seasons or hours.
What is temporal isolation?
Both domesticated dogs and foxes are related to modern-day wolves.
What is an example of divergent evolution?
What is disruptive selection?
Examples of this type of structure include a bat's wing and a bee's wing.
What is an analogous structure?
Morphology/structures, Embryology, and Molecular Biology.
What is evidence for evolution?
The divergence of two populations due to differences in courtship rituals or mating habits.
What is behavioral isolation?
Analogous structures are an example of this type of evolution.
What is convergent evolution?
The appendix and wisdom teeth are examples of this type of structure.
What are vestigial structures?
Examples of this type of structure include a human arm and a whale fin.
What is a homologous structure?
The ability to survive and reproduce.
What is fitness?
The birds of paradise use different dances and songs to attract females of the same species.
What is an example of behavioral isolation?
Hummingbirds have long beaks and tongues to be able to reach the nectar of specific flowers that other pollinators cannot reach. This is an example of...
What is co-evolution?
The derived characteristics for this animal shown above include having a backbone, hair, and being carnivorous.
What is the wolf?