Pre-Darwin and Evidence for Evolution
This scientist made a system to classify organisms.
Who is Carolus Linnaeus?
All genes in a population.
What is a gene pool?
Selection that favors the average trait.
What is stabilizing selection?
This is a diagram showing evolutionary relationships.
What is a phylogenetic tree?
Formation of a new species.
What is speciation?
This idea said species do not change and stay fixed.
What is fixity of species?
Random changes in small populations.
What is genetic drift?
Selection that favors one extreme.
What is directional selection?
Point where species share a common ancestor.
What is a node?
Slow and steady evolutionary change.
What is gradualism?
Structures that are similar due to common ancestry.
What are homologous structures?
Movement of alleles between populations.
What is gene flow?
Example: dark moths survive better in polluted areas.
Hint: (which selection is this?)
What is directional selection?
Group of organisms with a common ancestor.
What is a clade?
Speciation caused by geographic separation.
What is allopatric speciation?
Study of species distribution on Earth.
What is biogeography?
Environmental factors that affect survival.
What is selection pressure?
Example: medium traits are removed.
Hint: (which selection is this?)
What is disruptive selection?
The last universal common ancestor of all life.
What is LUCA?
One species splits into many species quickly.
What is adaptive radiation?
This shows evolution when bacteria survive drugs and pass on resistance.
What is antibiotic resistance?
“Survival of the fittest” means this.
What is individuals with better traits reproduce more?
This real-life case shows bacteria evolving quickly due to strong selection pressure in hospitals.
What is rapid evolution in bacteria?
Genes that control body structure and placement.
What is Hox genes?
This event wiped out the dinosaurs.
What is the Cretaceous–Paleogene extinction event?