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Unit 8 Vocab

Across
Inherited trait that is selected for over time in their environment
Trace of an organism from the past
Theory maintaining that species evolve slowly and continuously over long periods of geological time
Isolation between populations due to physical barriers
Processes that operated in the remote geological past are not different from those observed now
Theory that states that speciation occurs suddenly and rapidly followed by long periods of little evolutionary change
Postulating that those who are eliminated in the struggle for existence are the unfit
Process by which one species evolves and gives rise to many descendant species that occupy different ecological niches
Differences in physical traits of an individual from the group to which it belongs
The doctrine that certain vast geological changes in the earth's history
Remnants of an organ or structure that functioned in an earlier ancestor
Body part that is similar in function as a body part of another organism but is structurally different
Down
Change in a species over time
Process by which humans modify a species by breeding it for certain traits
Body part that is similar in structure on different organisms but performs different functions
Measure of an organism's ability to survive and produce offspring relative to other members of a population
Mechanism by which individuals that have inherited beneficial adaptations produce more offspring
All of the individuals of a species that live in the same area