Natural Selection
Process that occurs when organisms with beneficial traits survive and reproduce more successfully
Natural Selection
Which pattern is being described:
When a species disappears completely.
Extinction
Preserved remains or traces of ancient organisms
Fossils
The point where two branches split on a phylogenetic tree represents this.
Common Ancestor
The process of change over long periods of time
Evolution
Who evolves: Individuals or Populations
Populations
Which pattern is being described:
When one species splits into multiple
Speciation
The study of embryos to compare development among species
Embryology
If two species share a recent common ancestor, they are considered this.
Closely related
What is the main source of new genetic variation?
Mutation
What are the FOUR principles of natural selection?
Overproduction of Offspring, Variation, Adaptation, Descent with Modification
Which pattern is being described:
Evolution happens slowly over long periods of time
Gradualism
Similar bone structures in different organisms that indicate common ancestry
Homologous Structure
Species A vs Species B: 2 DNA Differences
Species A vs Species C: 14 Differences
Who is the closest relative to A?
B
Why can't individuals evolve?
Evolution occurs in populations
Which principle of natural selection is being described:
A rabbit population includes white, black, brown, and grey rabbits.
Variation
Which pattern is being described:
Long periods of little change interrupted by rapid evoltuion.
Punctuated Equilibrium
Similar body structures that evolved independently because of similar environments.
Analogous Structures
On the tree, which species diverged first?
Angel Fish
Identify the pattern:
Two species look very similar but have very different DNA
Convergent Evolution
Which principle of natural selection is being described:
Producing more offspring than can survive
Overproduction of offspring
Sharks and dolphins developing similar body shapes even though they are unrelated.
Convergent Evolution
DNA is 98% similar between two species, but they look different. Best evidence for relatedness?
DNA/Molecular Evidence
On the tree, who is most related to the crocodile: frog or platypus
Platypus
What is the name of the structure that best describes ostrich wings, and an appendix?
Vestigial