PMofAdaptiveEvolLEC15 Flashcards
What is homology?
Similarity resulting from common ancestry.
What are homologous structures?
Similarities that show variations of a trait that was present in a common ancestor.
What reveals homologies not visible in adult organisms?
Comparative embryology!
What are vestigial organs?
Remants of structures that served important functions in the organism’s ancestors.
What is biogeography?
The geographic distrubutions of species.
Darwin’s interest.
The origin of new species is?
What is it a center off?
Speciation!
Center of evolutionay theory.
What is macroevolution?
Evolutionary change that produces new taxa.
Two basic patterns of evolutionary change are?
Anagenesis (transformation), and Cladogenesis (branching off)!
What is a clade?
Each branch in an evolutionary tree.
What is Cladistics?
The study of clades.
What is species?
A population whose members can interbreed in nature and produce fertile offspring.
How are Pathogens growing resistant to drugs?
Natural selection is causing adaptive evolution for them as drugs are used.
The evolution of bacteria and viruses are challenging to us.
