Evidence
Similarities in DNA, Comparative Anatomy, Developmental Embryology, and Fossil Record are examples of...
"What is evidence for common ancestry?"
Giraffes with long necks can reach leaves for food. Giraffes with short necks cannot reach their food source. The trait that is most likely to remain in the giraffe population will be...
What is the Cambrian explosion?
An organism introduces a trait to a new population through migration/movement, increasing genetic variation/diversity.
What is gene flow?
The organism that shares only one trait with all in the cladogram.
What is the common ancestor?
A group of birds with various beak sizes live on an island together. Small beaks are ideal for nuts and insects found in crevices of trees. Large beaks are ideal for catching fish. Medium beaks struggle to catch both food sources. The likely trait(s) that will remain in the population over time will be...
What are small beaks and large beaks?
T/F : A population's fossils will have limited change shown if it is ideal for its environment.
A species hunting down another species for food.
What is predation?
Trait shared by all members of the cladogram.
What is ancestral trait?
This type of natural selection favors the average trait over the extreme traits. Think goldilocks; not too hot, not too cold, but just right!
What is stabilizing selection?
A population of a species shows little/no change in characteristics over time.
What is stasis?
A unique change to a population that serves a function.
What is a special adaptation?
Term used for describing a specific structure present in organisms in cladograms.
What is characteristic?
This type of natural selection favors one trait over the other. Think; switching sides!
What is directional selection?
A population of a species shows exponential growth in characteristics interrupted periodically by stasis.
What is punctuated equilibrium?
An environmental factor that influences survival and reproduction in organisms- this drives evolution!
What is selective pressure / natural selection?
The term used to describe similar layouts of anatomical structure.
What is homologous structures?
This type of natural selection favors extreme traits over the average trait. Think; I got options!
What is diversifying selection?
A population of species shows consistent evolution in characteristics over time.
What is gradualism?
An organism's ability to survive to reproduce and thrive in their unique environment (think camouflage, mimicry, adaptations).
What is fitness?