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Evolution Crossword

Across
The ability of an organism to survive and reproduce in its environment.
Proposed that species change over time by the use and disuse of structures and the inheritance of acquired traits.
a similarity of one organism, usually an animal, to another that has evolved because the resemblance is selectively favored by the behavior of a shared signal receiver that can respond to both.
the first economist to propose a systematic theory of population.
Any barrier that prevents genetic exchange between species
an adaptation that allows animals to blend in with certain aspects of their environment.
Selection by humans for breeding of useful traits from the natural variation among different organisms
An evolutionary pattern in which many species evolve from a single ancestral species
A change in the allele frequency of a population as a result of chance events rather than natural selection.
Down
Structures that have different mature forms in different organisms but develop from the same embryonic tissues
Process by which unrelated organisms independently evolve similarities when adapting to similar environments
Similar function but different structure - does not show common ancestry
All the fossils throughout the history of the Earth that are used as evidence of evolution.
English natural scientist who formulated a theory of evolution by natural selection (1809-1882)
A characteristic that improves an individual's ability to survive and reproduce in a particular environment.
refers to a population of animals, plants, or other organisms that are separated from exchanging genetic material with other organisms of the same species
Proposed that all the rocks on Earth were formed from sediments during a great flood.
Change in a kind of organism over time; process by which modern organisms have descended from ancient organisms.