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Evolution/Rat Island

Across
In evolutionary biology, the term analogous structures pertain to the various structures in different species having the same function but have evolved separately, thus do not share common ancestor
A structure in an organism that has lost all or most of its original function in the course of evolution, such as human appendixes.
the conditions, as physiological or behavioral differences or geographical barriers, that prevent potentially interbreeding populations from cross-fertilization.
A term used by paleontologists (see paleontology) to refer to the total number of fossils that have been discovered, as well as to the information derived from them.
the appearance of apparently similar structures in organisms of different lines of descent.
the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations.
the genetic contribution of an individual to the next generation's gene pool relative to the average for the population, usually measured by the number of offspring or close kin that survive to reproductive age.
A British naturalist of the nineteenth century. He and others developed the theory of evolution
Down
a process in the breeding of animals and in the cultivation of plants by which the breeder chooses to perpetuate only those forms having certain desirable inheritable characteristics.
change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift.
An 18th-century British philosopher and economist famous for his ideas about population growth.
random changes in the frequency of alleles in a gene pool, usually of small populations.
the act, means, or result of obscuring things to deceive an enemy, as by painting or screening objects so that they are lost to view in the background, or by making up objects that from a distance have the appearance of fortifications, guns, roads, etc.:
is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor. In other words, it's when very different animals have bones that appear very similar in form or function and seem to be related.
refers to a population of animals, plants, or other organisms that are separated from exchanging genetic material with other organisms of the same species.
any alteration in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment.
the close external resemblance of an organism, the mimic, to some different organism, the model, such that the mimic benefits from the mistaken identity, as seeming to be unpalatable or harmful.