Vocabulary
Natural Selection
Evidence for Evolution
Random
Speciation
100
What is variation?
Slight differences in the appearance of individual members of a species.
100
What is survival of the fittest?
The concept that organisms who are the best suited to their environment will be the most successful.
100
What are fossils?
Preserved remains of ancient organisms used by Darwin to form his theory.
100
What is a change in a gene that results in a new trait?
Mutation
100
What is speciation?
The formation of new species.
200
What is a theory?
A well supported testable explanation of phenomena that have occurred in the natural world is known as this.
200
What is natural selection?
The process where the best adapted individuals of a species are the ones most likely to survive and reproduce, thereby passing their beneficial traits on to their offspring.
200
What are homologous structures?
Structures that are shared by related species that were inherited from a common ancestor and it is evident during embryonic development.
200
What is most likely to happen to moth populations in the picture shown?
Dark moths--hunted easily, dark moths--population decreases.
200
What is species?
A group of similar organisms that can reproduce fertile offspring?
300
Define: Adaptation
Characteristic of a species that enables that species to survive in its environment
300
In a forest, yellow beetles and green beetles live in the rainforest canopy. If natural selection acted in this environment, how will the population change?
The green population will increase and the yellow will decrease.
300
What are vestigial structures?
Structures that are inherited from ancestors but have lost much or all of their original function.
300
What are the three domains?
Bacteria, Archaea, and Eukarya
300
Drosophilia (fruit fly) in Hawaii display different mating rituals. Identify the type of isolation mechanism.
Behavioral isolation
400
Define: Selecting Agent
The variable that causes the population to change.
400
What would happen if the environment changes drastically and no organisms have fitting adaptations?
All the species could go extinct
400
What are analogous structures?
Structures that have similar functions but different structures (ex: wing on bees vs, wing on birds)
400
What is molecular biology?
Type of evidence that uses molecular sequencing of inheritable biomolecules (RNA, DNA, proteins coded by each) to give more concrete results.
400
Prevention of interbreeding among members of the same species by the formation of natural barriers. Identify the isolation mechanism.
Geographic Isolation
500
What is fitness?
The ability of an individual to survive and reproduce is known as this.
500
Is this an example of Mimicry, camouflage, or chemical defense: A baby duck matches the nest?
Camouflage
500
What is biogeography?
The study where organisms live now and where they and their ancestors lived in the past
500
What is the study of the evolutionary history of a group of organisms?
Phylogeny
500
Two different species of pine tree release their pollen at different times. Identify the isolation mechanism.
Temporal Isolation