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Rat Island Project Crossword

Across
The breeding of plants and animals to produce desirable traits.
is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor.
is 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.
Since the environment can't support unlimited population growth, not all individuals get to reproduce to their full potential.
the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.
an adaptation that allows animals to blend in with certain aspects of their environment.
occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene.
is the change in the frequency of an existing gene variant (allele) in a population due to random sampling of organisms
Down
are internal systematic responses to external stimuli in order to help an organism maintain homeostasis.
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.
A British naturalist of the nineteenth century. He and others developed the theory of evolution.
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.
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 relatively long-distance movement of individual animals, usually on a seasonal basis.